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Finding the Fourth Proportional to 138,812.13, 208,216.17 and 33,630.39

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Solution

The fourth proportional to 138,812.13, 208,216.17 and 33,630.39 is: 50,445.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,812.13 : 208,216.17 = 33,630.39 : x
  2. Step 2: Convert to fraction form
    138,812.13/208,216.17 = 33,630.39/x
  3. Step 3: Cross multiply
    138,812.13x = 208,216.17 × 33,630.39
  4. Step 4: Simplify right side
    138,812.13x = 7,002,391,001.41
  5. Step 5: Solve for x
    x = 7,002,391,001.41/138,812.13
  6. Step 6: Final answer
    x = 50,445.09

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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.