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Finding the Fourth Proportional to 137,787.93, 206,727.89 and 53,550.81

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Solution

The fourth proportional to 137,787.93, 206,727.89 and 53,550.81 is: 80,344.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,787.93 : 206,727.89 = 53,550.81 : x
  2. Step 2: Convert to fraction form
    137,787.93/206,727.89 = 53,550.81/x
  3. Step 3: Cross multiply
    137,787.93x = 206,727.89 × 53,550.81
  4. Step 4: Simplify right side
    137,787.93x = 11,070,445,691.34
  5. Step 5: Solve for x
    x = 11,070,445,691.34/137,787.93
  6. Step 6: Final answer
    x = 80,344.09

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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.