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Finding the Fourth Proportional to 138,787.92, 207,866.58 and 108,614.10

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Solution

The fourth proportional to 138,787.92, 207,866.58 and 108,614.10 is: 162,674.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,787.92 : 207,866.58 = 108,614.10 : x
  2. Step 2: Convert to fraction form
    138,787.92/207,866.58 = 108,614.10/x
  3. Step 3: Cross multiply
    138,787.92x = 207,866.58 × 108,614.10
  4. Step 4: Simplify right side
    138,787.92x = 22,577,241,506.78
  5. Step 5: Solve for x
    x = 22,577,241,506.78/138,787.92
  6. Step 6: Final answer
    x = 162,674.40

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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.