Home / 138,414.20-207,621.30-131,502.20

Finding the Fourth Proportional to 138,414.20, 207,621.30 and 131,502.20

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Solution

The fourth proportional to 138,414.20, 207,621.30 and 131,502.20 is: 197,253.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,414.20 : 207,621.30 = 131,502.20 : x
  2. Step 2: Convert to fraction form
    138,414.20/207,621.30 = 131,502.20/x
  3. Step 3: Cross multiply
    138,414.20x = 207,621.30 × 131,502.20
  4. Step 4: Simplify right side
    138,414.20x = 27,302,657,716.86
  5. Step 5: Solve for x
    x = 27,302,657,716.86/138,414.20
  6. Step 6: Final answer
    x = 197,253.30

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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.