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Finding the Fourth Proportional to 138,027.52, 207,095.04 and 54,929.92

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Solution

The fourth proportional to 138,027.52, 207,095.04 and 54,929.92 is: 82,416.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,027.52 : 207,095.04 = 54,929.92 : x
  2. Step 2: Convert to fraction form
    138,027.52/207,095.04 = 54,929.92/x
  3. Step 3: Cross multiply
    138,027.52x = 207,095.04 × 54,929.92
  4. Step 4: Simplify right side
    138,027.52x = 11,375,713,979.60
  5. Step 5: Solve for x
    x = 11,375,713,979.60/138,027.52
  6. Step 6: Final answer
    x = 82,416.27

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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.