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Finding the Fourth Proportional to 137,635.10, 206,452.65 and 123,200.90

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Solution

The fourth proportional to 137,635.10, 206,452.65 and 123,200.90 is: 184,801.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,635.10 : 206,452.65 = 123,200.90 : x
  2. Step 2: Convert to fraction form
    137,635.10/206,452.65 = 123,200.90/x
  3. Step 3: Cross multiply
    137,635.10x = 206,452.65 × 123,200.90
  4. Step 4: Simplify right side
    137,635.10x = 25,435,152,287.39
  5. Step 5: Solve for x
    x = 25,435,152,287.39/137,635.10
  6. Step 6: Final answer
    x = 184,801.35

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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.