1.21 is what percent of 7.2 - 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 7.2 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 7.2, so we can write it down as 100%=7.2.
4. We know, that x% equals 1.21 of the output value, so we can write it down as x%=1.21.
5. Now we have two simple equations:
1) 100%=7.2
2) x%=1.21
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%=7.2/1.21
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 1.21 is what percent of 7.2

100%/x%=7.2/1.21
(100/x)*x=(7.2/1.21)*x       - we multiply both sides of the equation by x
100=5.9504132231405*x       - we divide both sides of the equation by (5.9504132231405) to get x
100/5.9504132231405=x
16.805555555556=x
x=16.805555555556

now we have:
1.21 is 16.805555555556% of 7.2