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Finding the Fourth Proportional to 250,091.85, 375,197.46 and 81,612.49

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Solution

The fourth proportional to 250,091.85, 375,197.46 and 81,612.49 is: 122,438.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,091.85 : 375,197.46 = 81,612.49 : x
  2. Step 2: Convert to fraction form
    250,091.85/375,197.46 = 81,612.49/x
  3. Step 3: Cross multiply
    250,091.85x = 375,197.46 × 81,612.49
  4. Step 4: Simplify right side
    250,091.85x = 30,620,799,280.67
  5. Step 5: Solve for x
    x = 30,620,799,280.67/250,091.85
  6. Step 6: Final answer
    x = 122,438.21

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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.