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Finding the Fourth Proportional to 101,759.90, 140,266.89 and 80,214.71

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Solution

The fourth proportional to 101,759.90, 140,266.89 and 80,214.71 is: 110,568.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,759.90 : 140,266.89 = 80,214.71 : x
  2. Step 2: Convert to fraction form
    101,759.90/140,266.89 = 80,214.71/x
  3. Step 3: Cross multiply
    101,759.90x = 140,266.89 × 80,214.71
  4. Step 4: Simplify right side
    101,759.90x = 11,251,467,202.62
  5. Step 5: Solve for x
    x = 11,251,467,202.62/101,759.90
  6. Step 6: Final answer
    x = 110,568.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.