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Finding the Fourth Proportional to 171,522.92, 257,159.53 and 71,711.43

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Solution

The fourth proportional to 171,522.92, 257,159.53 and 71,711.43 is: 107,514.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,522.92 : 257,159.53 = 71,711.43 : x
  2. Step 2: Convert to fraction form
    171,522.92/257,159.53 = 71,711.43/x
  3. Step 3: Cross multiply
    171,522.92x = 257,159.53 × 71,711.43
  4. Step 4: Simplify right side
    171,522.92x = 18,441,276,961.41
  5. Step 5: Solve for x
    x = 18,441,276,961.41/171,522.92
  6. Step 6: Final answer
    x = 107,514.94

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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.