Finding the Third Proportional to 81,247.50 and 129,741.75
Calculator
Solution
The third proportional to 81,247.50 and 129,741.75 is: 207,180.80
Step by Step Solution
- Step 1: Write the proportion equation
81,247.50 : 129,741.75 = 129,741.75 : x - Step 2: Convert to fraction form
81,247.50/129,741.75 = 129,741.75/x - Step 3: Cross multiply
81,247.50x = 129,741.75 × 129,741.75 - Step 4: Simplify right side
81,247.50x = 16,832,921,693.06 - Step 5: Solve for x
x = 16,832,921,693.06/81,247.50 - Step 6: Final answer
x = 207,180.80
Related Problems
Find third proportional to 40,623.75 and 64,870.88
Half scale
Find third proportional to 162,495 and 259,483.50
Double scale
Find third proportional to 81,250 and 129,745
Similar ratio
Find third proportional to 121,871.25 and 194,612.63
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.