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Finding the Fourth Proportional to 68,170.79, 102,254.65 and 18,250.85

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Solution

The fourth proportional to 68,170.79, 102,254.65 and 18,250.85 is: 27,375.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,170.79 : 102,254.65 = 18,250.85 : x
  2. Step 2: Convert to fraction form
    68,170.79/102,254.65 = 18,250.85/x
  3. Step 3: Cross multiply
    68,170.79x = 102,254.65 × 18,250.85
  4. Step 4: Simplify right side
    68,170.79x = 1,866,234,278.95
  5. Step 5: Solve for x
    x = 1,866,234,278.95/68,170.79
  6. Step 6: Final answer
    x = 27,375.86

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1.5x scale

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.