What is 78.15222... as a Fraction?

78.152 equals 70337900 as a fraction.

How do you turn 78.152 repeating into a fraction?

Detailed Answer:

Step 1: To convert 78.152 repeating into a fraction, begin writing this simple equation:

n = 78.152 (equation 1)

Step 2: Notice that there is 1 digit in the repeating block (2) and 2 digits in the non-repeating part (15). Multiply both sides by 10³ = 1000.

1000 × n = 78152.2 (equation 2)

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

1000 × n = 78152.2
 100 × n = 78.152
 900 × n = 70337

n = 70337900 (answer)

78.152 = 70337900 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 70337900 is also equal to 78137900 when expressed as a mixed number.

The repeating decimal 78.152 (vinculum notation) has a repeated block length of 1. It is also represented as 78.15222... (ellipsis notation) which equals approximately 78.1522222 (decimal approximation)(*).

The recurring decimal 78.152 can be written as a ratio of two integers having 70337 as the numerator and 900 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.