What is 14.187142871428714287142871428... as a Fraction?

14.1871428 equals 14187001999990 as a fraction.

How do you turn 14.1871428 repeating into a fraction?

Detailed Answer:

Step 1: To convert 14.1871428 repeating into a fraction, begin writing this simple equation:

n = 14.1871428 (equation 1)

Step 2: Notice that there are 5 digits in the repeating block (71428) and 2 digits in the non-repeating part (18). Multiply both sides by 10⁷ = 10000000.

10000000 × n = 141871428.71428 (equation 2)

Step 3: Now subtract equation 1 from equation 2 to cancel the repeating block (or repetend) out.

10000000 × n = 141871428.71428
     100 × n = 14.1871428
 9999900 × n = 141870010

1418700109999900 could be the answer, but it still can be put in the simplest form, i.e., reduced.

To simplify this fraction, divide the numerator and denominator by 10 (the GCF - greatest common factor).

n = 1418700109999900 = 141870010 ÷ 109999900 ÷ 10 = 14187001999990. So,

14.1871428 = 14187001999990 as the lowest possible fraction.

As the numerator is greater than the denominator, we have an improper fraction, so we can also express it as a mixed number, thus 14187001999990 is also equal to 14187141999990 when expressed as a mixed number.

The repeating decimal 14.1871428 (vinculum notation) has a repeated block length of 5. It is also represented as 14.18714287142871428... (ellipsis notation) which equals approximately 14.187142871428714287142871428 (decimal approximation)(*).

The recurring decimal 14.1871428 can be written as a ratio of two integers having 14187001 as the numerator and 999990 as the denominator. So, it is a rational number (named after ratio). It can be shown that a number is rational if its decimal representation is repeating or terminating.

(*) At present, there is no single universally accepted notation or phrasing for repeating decimals.