Finding the Fourth Proportional to 8,129,013,793.66, 12,192,066,138.66 and 5,172,511,151.44
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Solution
The fourth proportional to 8,129,013,793.66, 12,192,066,138.66 and 5,172,511,151.44 is: 7,757,841,192.31
Step by Step Solution
- Step 1: Write the proportion equation
8,129,013,793.66 : 12,192,066,138.66 = 5,172,511,151.44 : x - Step 2: Convert to fraction form
8,129,013,793.66/12,192,066,138.66 = 5,172,511,151.44/x - Step 3: Cross multiply
8,129,013,793.66x = 12,192,066,138.66 × 5,172,511,151.44 - Step 4: Simplify right side
8,129,013,793.66x = 63,063,598,061,312,868,352 - Step 5: Solve for x
x = 63,063,598,061,312,868,352/8,129,013,793.66 - Step 6: Final answer
x = 7,757,841,192.31
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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.