Finding the Fourth Proportional to 118,638,237.72, 163,713,545.37 and 65,711,808.12
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Solution
The fourth proportional to 118,638,237.72, 163,713,545.37 and 65,711,808.12 is: 90,678,294.68
Step by Step Solution
- Step 1: Write the proportion equation
118,638,237.72 : 163,713,545.37 = 65,711,808.12 : x - Step 2: Convert to fraction form
118,638,237.72/163,713,545.37 = 65,711,808.12/x - Step 3: Cross multiply
118,638,237.72x = 163,713,545.37 × 65,711,808.12 - Step 4: Simplify right side
118,638,237.72x = 10,757,913,079,998,354 - Step 5: Solve for x
x = 10,757,913,079,998,354/118,638,237.72 - Step 6: Final answer
x = 90,678,294.68
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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.