Finding the Fourth Proportional to 87,439,721.80, 131,159,582.70 and 84,920,297.80
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Solution
The fourth proportional to 87,439,721.80, 131,159,582.70 and 84,920,297.80 is: 127,380,446.70
Step by Step Solution
- Step 1: Write the proportion equation
87,439,721.80 : 131,159,582.70 = 84,920,297.80 : x - Step 2: Convert to fraction form
87,439,721.80/131,159,582.70 = 84,920,297.80/x - Step 3: Cross multiply
87,439,721.80x = 131,159,582.70 × 84,920,297.80 - Step 4: Simplify right side
87,439,721.80x = 11,138,110,822,207,728 - Step 5: Solve for x
x = 11,138,110,822,207,728/87,439,721.80 - Step 6: Final answer
x = 127,380,446.70
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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.