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Finding the Fourth Proportional to 250,108.51, 375,201.92 and 81,589.88

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Solution

The fourth proportional to 250,108.51, 375,201.92 and 81,589.88 is: 122,397.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,108.51 : 375,201.92 = 81,589.88 : x
  2. Step 2: Convert to fraction form
    250,108.51/375,201.92 = 81,589.88/x
  3. Step 3: Cross multiply
    250,108.51x = 375,201.92 × 81,589.88
  4. Step 4: Simplify right side
    250,108.51x = 30,612,680,770.55
  5. Step 5: Solve for x
    x = 30,612,680,770.55/250,108.51
  6. Step 6: Final answer
    x = 122,397.60

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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.