121.99 is what percent of 170 - 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 170 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 170, so we can write it down as 100%=170.
4. We know, that x% equals 121.99 of the output value, so we can write it down as x%=121.99.
5. Now we have two simple equations:
1) 100%=170
2) x%=121.99
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%=170/121.99
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 121.99 is what percent of 170

100%/x%=170/121.99
(100/x)*x=(170/121.99)*x       - we multiply both sides of the equation by x
100=1.393556848922*x       - we divide both sides of the equation by (1.393556848922) to get x
100/1.393556848922=x
71.758823529412=x
x=71.758823529412

now we have:
121.99 is 71.758823529412% of 170