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Finding the Fourth Proportional to 171,168.30, 256,737.78 and 67,195.98

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Solution

The fourth proportional to 171,168.30, 256,737.78 and 67,195.98 is: 100,788.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,168.30 : 256,737.78 = 67,195.98 : x
  2. Step 2: Convert to fraction form
    171,168.30/256,737.78 = 67,195.98/x
  3. Step 3: Cross multiply
    171,168.30x = 256,737.78 × 67,195.98
  4. Step 4: Simplify right side
    171,168.30x = 17,251,746,730.12
  5. Step 5: Solve for x
    x = 17,251,746,730.12/171,168.30
  6. Step 6: Final answer
    x = 100,788.21

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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.