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Finding the Fourth Proportional to 171,937.88, 257,823.87 and 72,071.26

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Solution

The fourth proportional to 171,937.88, 257,823.87 and 72,071.26 is: 108,072.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,937.88 : 257,823.87 = 72,071.26 : x
  2. Step 2: Convert to fraction form
    171,937.88/257,823.87 = 72,071.26/x
  3. Step 3: Cross multiply
    171,937.88x = 257,823.87 × 72,071.26
  4. Step 4: Simplify right side
    171,937.88x = 18,581,690,254.15
  5. Step 5: Solve for x
    x = 18,581,690,254.15/171,937.88
  6. Step 6: Final answer
    x = 108,072.12

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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.