Finding the Fourth Proportional to 71,398.20, 107,097.30 and 68,117.70
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Solution
The fourth proportional to 71,398.20, 107,097.30 and 68,117.70 is: 102,176.55
Step by Step Solution
- Step 1: Write the proportion equation
71,398.20 : 107,097.30 = 68,117.70 : x - Step 2: Convert to fraction form
71,398.20/107,097.30 = 68,117.70/x - Step 3: Cross multiply
71,398.20x = 107,097.30 × 68,117.70 - Step 4: Simplify right side
71,398.20x = 7,295,221,752.21 - Step 5: Solve for x
x = 7,295,221,752.21/71,398.20 - Step 6: Final answer
x = 102,176.55
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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.