Finding the Fourth Proportional to 121,383,039.28, 167,521,575.46 and 74,371,311.70
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Solution
The fourth proportional to 121,383,039.28, 167,521,575.46 and 74,371,311.70 is: 102,640,363.75
Step by Step Solution
- Step 1: Write the proportion equation
121,383,039.28 : 167,521,575.46 = 74,371,311.70 : x - Step 2: Convert to fraction form
121,383,039.28/167,521,575.46 = 74,371,311.70/x - Step 3: Cross multiply
121,383,039.28x = 167,521,575.46 × 74,371,311.70 - Step 4: Simplify right side
121,383,039.28x = 12,458,799,305,010,732 - Step 5: Solve for x
x = 12,458,799,305,010,732/121,383,039.28 - Step 6: Final answer
x = 102,640,363.75
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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.