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Finding the Fourth Proportional to 171,111.92, 256,711.61 and 71,238.92

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Solution

The fourth proportional to 171,111.92, 256,711.61 and 71,238.92 is: 106,876.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,111.92 : 256,711.61 = 71,238.92 : x
  2. Step 2: Convert to fraction form
    171,111.92/256,711.61 = 71,238.92/x
  3. Step 3: Cross multiply
    171,111.92x = 256,711.61 × 71,238.92
  4. Step 4: Simplify right side
    171,111.92x = 18,287,856,742.40
  5. Step 5: Solve for x
    x = 18,287,856,742.40/171,111.92
  6. Step 6: Final answer
    x = 106,876.58

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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.