Finding the Fourth Proportional to 198,310,851.70, 273,380,545.96 and 138,586,721.84
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Solution
The fourth proportional to 198,310,851.70, 273,380,545.96 and 138,586,721.84 is: 191,048,111.36
Step by Step Solution
- Step 1: Write the proportion equation
198,310,851.70 : 273,380,545.96 = 138,586,721.84 : x - Step 2: Convert to fraction form
198,310,851.70/273,380,545.96 = 138,586,721.84/x - Step 3: Cross multiply
198,310,851.70x = 273,380,545.96 × 138,586,721.84 - Step 4: Simplify right side
198,310,851.70x = 37,886,913,679,425,856 - Step 5: Solve for x
x = 37,886,913,679,425,856/198,310,851.70 - Step 6: Final answer
x = 191,048,111.36
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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.