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Finding the Fourth Proportional to 137,710.60, 206,565.90 and 131,149.60

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Solution

The fourth proportional to 137,710.60, 206,565.90 and 131,149.60 is: 196,724.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,710.60 : 206,565.90 = 131,149.60 : x
  2. Step 2: Convert to fraction form
    137,710.60/206,565.90 = 131,149.60/x
  3. Step 3: Cross multiply
    137,710.60x = 206,565.90 × 131,149.60
  4. Step 4: Simplify right side
    137,710.60x = 27,091,035,158.64
  5. Step 5: Solve for x
    x = 27,091,035,158.64/137,710.60
  6. Step 6: Final answer
    x = 196,724.40

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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.