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Finding the Fourth Proportional to 133,930.39, 200,905.31 and 40,443.43

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Solution

The fourth proportional to 133,930.39, 200,905.31 and 40,443.43 is: 60,668.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,930.39 : 200,905.31 = 40,443.43 : x
  2. Step 2: Convert to fraction form
    133,930.39/200,905.31 = 40,443.43/x
  3. Step 3: Cross multiply
    133,930.39x = 200,905.31 × 40,443.43
  4. Step 4: Simplify right side
    133,930.39x = 8,125,299,841.61
  5. Step 5: Solve for x
    x = 8,125,299,841.61/133,930.39
  6. Step 6: Final answer
    x = 60,668.08

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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.