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Finding the Fourth Proportional to 425,105.10, 637,507.17 and 125,505.54

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Solution

The fourth proportional to 425,105.10, 637,507.17 and 125,505.54 is: 188,213.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,105.10 : 637,507.17 = 125,505.54 : x
  2. Step 2: Convert to fraction form
    425,105.10/637,507.17 = 125,505.54/x
  3. Step 3: Cross multiply
    425,105.10x = 637,507.17 × 125,505.54
  4. Step 4: Simplify right side
    425,105.10x = 80,010,681,624.72
  5. Step 5: Solve for x
    x = 80,010,681,624.72/425,105.10
  6. Step 6: Final answer
    x = 188,213.88

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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.