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Finding the Fourth Proportional to 171,007.29, 256,372.52 and 71,242.43

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Solution

The fourth proportional to 171,007.29, 256,372.52 and 71,242.43 is: 106,805.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,007.29 : 256,372.52 = 71,242.43 : x
  2. Step 2: Convert to fraction form
    171,007.29/256,372.52 = 71,242.43/x
  3. Step 3: Cross multiply
    171,007.29x = 256,372.52 × 71,242.43
  4. Step 4: Simplify right side
    171,007.29x = 18,264,599,671.95
  5. Step 5: Solve for x
    x = 18,264,599,671.95/171,007.29
  6. Step 6: Final answer
    x = 106,805.97

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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.