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Finding the Fourth Proportional to 110,900.20, 166,350.30 and 81,375.70

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Solution

The fourth proportional to 110,900.20, 166,350.30 and 81,375.70 is: 122,063.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,900.20 : 166,350.30 = 81,375.70 : x
  2. Step 2: Convert to fraction form
    110,900.20/166,350.30 = 81,375.70/x
  3. Step 3: Cross multiply
    110,900.20x = 166,350.30 × 81,375.70
  4. Step 4: Simplify right side
    110,900.20x = 13,536,872,107.71
  5. Step 5: Solve for x
    x = 13,536,872,107.71/110,900.20
  6. Step 6: Final answer
    x = 122,063.55

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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.