What is 15.118222... as a Fraction?

15.1182 equals 170081125 as a fraction.

How do you turn 15.1182 repeating into a fraction?

Detailed Answer:

Step 1: To convert 15.1182 repeating into a fraction, begin writing this simple equation:

n = 15.1182 (equation 1)

Step 2: Notice that there is 1 digit in the repeating block (2) and 3 digits in the non-repeating part (118). Multiply both sides by 10⁴ = 10000.

10000 × n = 151182.2 (equation 2)

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

10000 × n = 151182.2
 1000 × n = 15.1182
 9000 × n = 136064

1360649000 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 8 (the GCF - greatest common factor).

n = 1360649000 = 136064 ÷ 89000 ÷ 8 = 170081125. So,

15.1182 = 170081125 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 170081125 is also equal to 151331125 when expressed as a mixed number.

The repeating decimal 15.1182 (vinculum notation) has a repeated block length of 1. It is also represented as 15.118222... (ellipsis notation) which equals approximately 15.11822222 (decimal approximation)(*).

The recurring decimal 15.1182 can be written as a ratio of two integers having 17008 as the numerator and 1125 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.