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Finding the Fourth Proportional to 425,674.08, 638,573.09 and 126,115.83

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Solution

The fourth proportional to 425,674.08, 638,573.09 and 126,115.83 is: 189,192.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,674.08 : 638,573.09 = 126,115.83 : x
  2. Step 2: Convert to fraction form
    425,674.08/638,573.09 = 126,115.83/x
  3. Step 3: Cross multiply
    425,674.08x = 638,573.09 × 126,115.83
  4. Step 4: Simplify right side
    425,674.08x = 80,534,174,630.44
  5. Step 5: Solve for x
    x = 80,534,174,630.44/425,674.08
  6. Step 6: Final answer
    x = 189,192.10

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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.