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Finding the Fourth Proportional to 100,752.40, 151,092.15 and 40,755.70

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Solution

The fourth proportional to 100,752.40, 151,092.15 and 40,755.70 is: 61,118.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,752.40 : 151,092.15 = 40,755.70 : x
  2. Step 2: Convert to fraction form
    100,752.40/151,092.15 = 40,755.70/x
  3. Step 3: Cross multiply
    100,752.40x = 151,092.15 × 40,755.70
  4. Step 4: Simplify right side
    100,752.40x = 6,157,866,337.76
  5. Step 5: Solve for x
    x = 6,157,866,337.76/100,752.40
  6. Step 6: Final answer
    x = 61,118.81

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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.