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Finding the Fourth Proportional to 133,697.86, 200,579.69 and 38,928.87

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Solution

The fourth proportional to 133,697.86, 200,579.69 and 38,928.87 is: 58,402.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,697.86 : 200,579.69 = 38,928.87 : x
  2. Step 2: Convert to fraction form
    133,697.86/200,579.69 = 38,928.87/x
  3. Step 3: Cross multiply
    133,697.86x = 200,579.69 × 38,928.87
  4. Step 4: Simplify right side
    133,697.86x = 7,808,340,773.97
  5. Step 5: Solve for x
    x = 7,808,340,773.97/133,697.86
  6. Step 6: Final answer
    x = 58,402.89

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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.