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Finding the Fourth Proportional to 101,767.34, 140,276.65 and 80,221.95

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Solution

The fourth proportional to 101,767.34, 140,276.65 and 80,221.95 is: 110,578.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,767.34 : 140,276.65 = 80,221.95 : x
  2. Step 2: Convert to fraction form
    101,767.34/140,276.65 = 80,221.95/x
  3. Step 3: Cross multiply
    101,767.34x = 140,276.65 × 80,221.95
  4. Step 4: Simplify right side
    101,767.34x = 11,253,266,402.47
  5. Step 5: Solve for x
    x = 11,253,266,402.47/101,767.34
  6. Step 6: Final answer
    x = 110,578.37

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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.