Finding the Fourth Proportional to 136,440,424.67, 188,306,988.80 and 86,864,961.92
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Solution
The fourth proportional to 136,440,424.67, 188,306,988.80 and 86,864,961.92 is: 119,885,872.90
Step by Step Solution
- Step 1: Write the proportion equation
136,440,424.67 : 188,306,988.80 = 86,864,961.92 : x - Step 2: Convert to fraction form
136,440,424.67/188,306,988.80 = 86,864,961.92/x - Step 3: Cross multiply
136,440,424.67x = 188,306,988.80 × 86,864,961.92 - Step 4: Simplify right side
136,440,424.67x = 16,357,279,410,006,006 - Step 5: Solve for x
x = 16,357,279,410,006,006/136,440,424.67 - Step 6: Final answer
x = 119,885,872.90
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.