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Finding the Fourth Proportional to 137,727.80, 206,591.70 and 131,895.80

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Solution

The fourth proportional to 137,727.80, 206,591.70 and 131,895.80 is: 197,843.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,727.80 : 206,591.70 = 131,895.80 : x
  2. Step 2: Convert to fraction form
    137,727.80/206,591.70 = 131,895.80/x
  3. Step 3: Cross multiply
    137,727.80x = 206,591.70 × 131,895.80
  4. Step 4: Simplify right side
    137,727.80x = 27,248,577,544.86
  5. Step 5: Solve for x
    x = 27,248,577,544.86/137,727.80
  6. Step 6: Final answer
    x = 197,843.70

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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.