Finding the Third Proportional to 129,390.75 and 281,562.75
Calculator
Solution
The third proportional to 129,390.75 and 281,562.75 is: 612,698.99
Step by Step Solution
- Step 1: Write the proportion equation
129,390.75 : 281,562.75 = 281,562.75 : x - Step 2: Convert to fraction form
129,390.75/281,562.75 = 281,562.75/x - Step 3: Cross multiply
129,390.75x = 281,562.75 × 281,562.75 - Step 4: Simplify right side
129,390.75x = 79,277,582,187.56 - Step 5: Solve for x
x = 79,277,582,187.56/129,390.75 - Step 6: Final answer
x = 612,698.99
Related Problems
Find third proportional to 64,695.38 and 140,781.38
Half scale
Find third proportional to 258,781.50 and 563,125.50
Double scale
Find third proportional to 129,393 and 281,567
Similar ratio
Find third proportional to 194,086.13 and 422,344.13
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.