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Finding the Fourth Proportional to 168,958.75, 253,339.71 and 74,185.15

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Solution

The fourth proportional to 168,958.75, 253,339.71 and 74,185.15 is: 111,234.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,958.75 : 253,339.71 = 74,185.15 : x
  2. Step 2: Convert to fraction form
    168,958.75/253,339.71 = 74,185.15/x
  3. Step 3: Cross multiply
    168,958.75x = 253,339.71 × 74,185.15
  4. Step 4: Simplify right side
    168,958.75x = 18,794,044,387.31
  5. Step 5: Solve for x
    x = 18,794,044,387.31/168,958.75
  6. Step 6: Final answer
    x = 111,234.51

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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.