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Finding the Fourth Proportional to 171,015.91, 256,385.45 and 71,251.04

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Solution

The fourth proportional to 171,015.91, 256,385.45 and 71,251.04 is: 106,818.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,015.91 : 256,385.45 = 71,251.04 : x
  2. Step 2: Convert to fraction form
    171,015.91/256,385.45 = 71,251.04/x
  3. Step 3: Cross multiply
    171,015.91x = 256,385.45 × 71,251.04
  4. Step 4: Simplify right side
    171,015.91x = 18,267,730,772.46
  5. Step 5: Solve for x
    x = 18,267,730,772.46/171,015.91
  6. Step 6: Final answer
    x = 106,818.90

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1.5x scale

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.