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Finding the Fourth Proportional to 129,046.80, 193,531.80 and 50,115.60

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Solution

The fourth proportional to 129,046.80, 193,531.80 and 50,115.60 is: 75,158.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,046.80 : 193,531.80 = 50,115.60 : x
  2. Step 2: Convert to fraction form
    129,046.80/193,531.80 = 50,115.60/x
  3. Step 3: Cross multiply
    129,046.80x = 193,531.80 × 50,115.60
  4. Step 4: Simplify right side
    129,046.80x = 9,698,962,276.08
  5. Step 5: Solve for x
    x = 9,698,962,276.08/129,046.80
  6. Step 6: Final answer
    x = 75,158.49

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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.