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Finding the Fourth Proportional to 138,520.97, 207,781.52 and 33,339.94

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Solution

The fourth proportional to 138,520.97, 207,781.52 and 33,339.94 is: 50,009.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,520.97 : 207,781.52 = 33,339.94 : x
  2. Step 2: Convert to fraction form
    138,520.97/207,781.52 = 33,339.94/x
  3. Step 3: Cross multiply
    138,520.97x = 207,781.52 × 33,339.94
  4. Step 4: Simplify right side
    138,520.97x = 6,927,423,695.31
  5. Step 5: Solve for x
    x = 6,927,423,695.31/138,520.97
  6. Step 6: Final answer
    x = 50,009.93

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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.