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Finding the Fourth Proportional to 154,469.70, 231,250.95 and 115,200.90

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Solution

The fourth proportional to 154,469.70, 231,250.95 and 115,200.90 is: 172,463.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,469.70 : 231,250.95 = 115,200.90 : x
  2. Step 2: Convert to fraction form
    154,469.70/231,250.95 = 115,200.90/x
  3. Step 3: Cross multiply
    154,469.70x = 231,250.95 × 115,200.90
  4. Step 4: Simplify right side
    154,469.70x = 26,640,317,565.86
  5. Step 5: Solve for x
    x = 26,640,317,565.86/154,469.70
  6. Step 6: Final answer
    x = 172,463.06

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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.