Finding the Third Proportional to 129,205,980 and 198,598,542
Calculator
Solution
The third proportional to 129,205,980 and 198,598,542 is: 305,259,716.96
Step by Step Solution
- Step 1: Write the proportion equation
129,205,980 : 198,598,542 = 198,598,542 : x - Step 2: Convert to fraction form
129,205,980/198,598,542 = 198,598,542/x - Step 3: Cross multiply
129,205,980x = 198,598,542 × 198,598,542 - Step 4: Simplify right side
129,205,980x = 39,441,380,884,525,760 - Step 5: Solve for x
x = 39,441,380,884,525,760/129,205,980 - Step 6: Final answer
x = 305,259,716.96
Related Problems
Find third proportional to 64,602,990 and 99,299,271
Half scale
Find third proportional to 258,411,960 and 397,197,084
Double scale
Find third proportional to 129,205,982 and 198,598,545
Similar ratio
Find third proportional to 193,808,970 and 297,897,813
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.