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Finding the Fourth Proportional to 138,028.52, 207,096.54 and 54,930.92

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Solution

The fourth proportional to 138,028.52, 207,096.54 and 54,930.92 is: 82,417.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,028.52 : 207,096.54 = 54,930.92 : x
  2. Step 2: Convert to fraction form
    138,028.52/207,096.54 = 54,930.92/x
  3. Step 3: Cross multiply
    138,028.52x = 207,096.54 × 54,930.92
  4. Step 4: Simplify right side
    138,028.52x = 11,376,003,471.02
  5. Step 5: Solve for x
    x = 11,376,003,471.02/138,028.52
  6. Step 6: Final answer
    x = 82,417.77

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1.5x scale

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.