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Finding the Fourth Proportional to 171,374.64, 256,614.84 and 137,911.92

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Solution

The fourth proportional to 171,374.64, 256,614.84 and 137,911.92 is: 206,508.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,374.64 : 256,614.84 = 137,911.92 : x
  2. Step 2: Convert to fraction form
    171,374.64/256,614.84 = 137,911.92/x
  3. Step 3: Cross multiply
    171,374.64x = 256,614.84 × 137,911.92
  4. Step 4: Simplify right side
    171,374.64x = 35,390,245,284.89
  5. Step 5: Solve for x
    x = 35,390,245,284.89/171,374.64
  6. Step 6: Final answer
    x = 206,508.06

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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.