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Finding the Fourth Proportional to 168,000.70, 252,001.05 and 138,451.90

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Solution

The fourth proportional to 168,000.70, 252,001.05 and 138,451.90 is: 207,677.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,000.70 : 252,001.05 = 138,451.90 : x
  2. Step 2: Convert to fraction form
    168,000.70/252,001.05 = 138,451.90/x
  3. Step 3: Cross multiply
    168,000.70x = 252,001.05 × 138,451.90
  4. Step 4: Simplify right side
    168,000.70x = 34,890,024,174.50
  5. Step 5: Solve for x
    x = 34,890,024,174.50/168,000.70
  6. Step 6: Final answer
    x = 207,677.85

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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.