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Finding the Fourth Proportional to 154,520.52, 231,469.12 and 129,490.30

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Solution

The fourth proportional to 154,520.52, 231,469.12 and 129,490.30 is: 193,974.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,520.52 : 231,469.12 = 129,490.30 : x
  2. Step 2: Convert to fraction form
    154,520.52/231,469.12 = 129,490.30/x
  3. Step 3: Cross multiply
    154,520.52x = 231,469.12 × 129,490.30
  4. Step 4: Simplify right side
    154,520.52x = 29,973,005,789.54
  5. Step 5: Solve for x
    x = 29,973,005,789.54/154,520.52
  6. Step 6: Final answer
    x = 193,974.27

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1.5x scale

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.