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Finding the Fourth Proportional to 138,644.35, 206,801.65 and 125,873.44

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Solution

The fourth proportional to 138,644.35, 206,801.65 and 125,873.44 is: 187,752.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,644.35 : 206,801.65 = 125,873.44 : x
  2. Step 2: Convert to fraction form
    138,644.35/206,801.65 = 125,873.44/x
  3. Step 3: Cross multiply
    138,644.35x = 206,801.65 × 125,873.44
  4. Step 4: Simplify right side
    138,644.35x = 26,030,835,083.18
  5. Step 5: Solve for x
    x = 26,030,835,083.18/138,644.35
  6. Step 6: Final answer
    x = 187,752.58

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.