Finding the Fourth Proportional to 83,417,220.80, 125,125,831.20 and 80,015,998.40
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Solution
The fourth proportional to 83,417,220.80, 125,125,831.20 and 80,015,998.40 is: 120,023,997.60
Step by Step Solution
- Step 1: Write the proportion equation
83,417,220.80 : 125,125,831.20 = 80,015,998.40 : x - Step 2: Convert to fraction form
83,417,220.80/125,125,831.20 = 80,015,998.40/x - Step 3: Cross multiply
83,417,220.80x = 125,125,831.20 × 80,015,998.40 - Step 4: Simplify right side
83,417,220.80x = 10,012,068,309,097,872 - Step 5: Solve for x
x = 10,012,068,309,097,872/83,417,220.80 - Step 6: Final answer
x = 120,023,997.60
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.