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Finding the Fourth Proportional to 168,781.30, 253,013.55 and 63,670.90

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Solution

The fourth proportional to 168,781.30, 253,013.55 and 63,670.90 is: 95,446.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,781.30 : 253,013.55 = 63,670.90 : x
  2. Step 2: Convert to fraction form
    168,781.30/253,013.55 = 63,670.90/x
  3. Step 3: Cross multiply
    168,781.30x = 253,013.55 × 63,670.90
  4. Step 4: Simplify right side
    168,781.30x = 16,109,600,440.70
  5. Step 5: Solve for x
    x = 16,109,600,440.70/168,781.30
  6. Step 6: Final answer
    x = 95,446.60

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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.