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Finding the Fourth Proportional to 138,732.60, 208,098.90 and 60,000.60

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Solution

The fourth proportional to 138,732.60, 208,098.90 and 60,000.60 is: 90,000.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,732.60 : 208,098.90 = 60,000.60 : x
  2. Step 2: Convert to fraction form
    138,732.60/208,098.90 = 60,000.60/x
  3. Step 3: Cross multiply
    138,732.60x = 208,098.90 × 60,000.60
  4. Step 4: Simplify right side
    138,732.60x = 12,486,058,859.34
  5. Step 5: Solve for x
    x = 12,486,058,859.34/138,732.60
  6. Step 6: Final answer
    x = 90,000.90

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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.