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Finding the Fourth Proportional to 138,589.38, 207,884.07 and 33,408.45

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Solution

The fourth proportional to 138,589.38, 207,884.07 and 33,408.45 is: 50,112.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,589.38 : 207,884.07 = 33,408.45 : x
  2. Step 2: Convert to fraction form
    138,589.38/207,884.07 = 33,408.45/x
  3. Step 3: Cross multiply
    138,589.38x = 207,884.07 × 33,408.45
  4. Step 4: Simplify right side
    138,589.38x = 6,945,084,558.39
  5. Step 5: Solve for x
    x = 6,945,084,558.39/138,589.38
  6. Step 6: Final answer
    x = 50,112.68

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Similar ratio
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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.