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Finding the Fourth Proportional to 171,264.78, 256,946.58 and 71,373.42

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Solution

The fourth proportional to 171,264.78, 256,946.58 and 71,373.42 is: 107,080.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,264.78 : 256,946.58 = 71,373.42 : x
  2. Step 2: Convert to fraction form
    171,264.78/256,946.58 = 71,373.42/x
  3. Step 3: Cross multiply
    171,264.78x = 256,946.58 × 71,373.42
  4. Step 4: Simplify right side
    171,264.78x = 18,339,156,171.90
  5. Step 5: Solve for x
    x = 18,339,156,171.90/171,264.78
  6. Step 6: Final answer
    x = 107,080.72

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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.