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Finding the Fourth Proportional to 137,251.92, 205,735.08 and 53,069.88

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Solution

The fourth proportional to 137,251.92, 205,735.08 and 53,069.88 is: 79,549.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,251.92 : 205,735.08 = 53,069.88 : x
  2. Step 2: Convert to fraction form
    137,251.92/205,735.08 = 53,069.88/x
  3. Step 3: Cross multiply
    137,251.92x = 205,735.08 × 53,069.88
  4. Step 4: Simplify right side
    137,251.92x = 10,918,336,007.39
  5. Step 5: Solve for x
    x = 10,918,336,007.39/137,251.92
  6. Step 6: Final answer
    x = 79,549.60

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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.