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Finding the Fourth Proportional to 108,872.38, 163,245 and 42,234.64

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Solution

The fourth proportional to 108,872.38, 163,245 and 42,234.64 is: 63,327.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,872.38 : 163,245 = 42,234.64 : x
  2. Step 2: Convert to fraction form
    108,872.38/163,245 = 42,234.64/x
  3. Step 3: Cross multiply
    108,872.38x = 163,245 × 42,234.64
  4. Step 4: Simplify right side
    108,872.38x = 6,894,593,806.80
  5. Step 5: Solve for x
    x = 6,894,593,806.80/108,872.38
  6. Step 6: Final answer
    x = 63,327.30

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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.