155.5 is what percent of 171 - step by step solution

To get the solution, we are looking for, we need to point out what we know.

1. We assume, that the number 171 is 100% - because it's the output value of the task.
2. We assume, that x is the value we are looking for.
3. If 100% equals 171, so we can write it down as 100%=171.
4. We know, that x% equals 155.5 of the output value, so we can write it down as x%=155.5.
5. Now we have two simple equations:
1) 100%=171
2) x%=155.5
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
100%/x%=171/155.5
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 155.5 is what percent of 171

100%/x%=171/155.5
(100/x)*x=(171/155.5)*x       - we multiply both sides of the equation by x
100=1.0996784565916*x       - we divide both sides of the equation by (1.0996784565916) to get x
100/1.0996784565916=x
90.93567251462=x
x=90.93567251462

now we have:
155.5 is 90.93567251462% of 171