Finding the Fourth Proportional to 106,508,972.70, 159,763,459.05 and 87,361,350.30
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Solution
The fourth proportional to 106,508,972.70, 159,763,459.05 and 87,361,350.30 is: 131,042,025.45
Step by Step Solution
- Step 1: Write the proportion equation
106,508,972.70 : 159,763,459.05 = 87,361,350.30 : x - Step 2: Convert to fraction form
106,508,972.70/159,763,459.05 = 87,361,350.30/x - Step 3: Cross multiply
106,508,972.70x = 159,763,459.05 × 87,361,350.30 - Step 4: Simplify right side
106,508,972.70x = 13,957,151,511,206,756 - Step 5: Solve for x
x = 13,957,151,511,206,756/106,508,972.70 - Step 6: Final answer
x = 131,042,025.45
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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.