What is 168.1777... as a Fraction?

168.17 equals 756845 as a fraction.

How do you turn 168.17 repeating into a fraction?

Detailed Answer:

Step 1: To convert 168.17 repeating into a fraction, begin writing this simple equation:

n = 168.17 (equation 1)

Step 2: Notice that there is 1 digit in the repeating block (7) and 1 digit in the non-repeating part (1). Multiply both sides by 10² = 100.

100 × n = 16817.7 (equation 2)

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

100 × n = 16817.7
 10 × n = 168.17
 90 × n = 15136

1513690 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 2 (the GCF - greatest common factor).

n = 1513690 = 15136 ÷ 290 ÷ 2 = 756845. So,

168.17 = 756845 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 756845 is also equal to 168845 when expressed as a mixed number.

The repeating decimal 168.17 (vinculum notation) has a repeated block length of 1. It is also represented as 168.1777... (ellipsis notation) which equals approximately 168.177777 (decimal approximation)(*).

The recurring decimal 168.17 can be written as a ratio of two integers having 7568 as the numerator and 45 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.