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Finding the Fourth Proportional to 101,748.78, 140,251.49 and 80,203.59

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Solution

The fourth proportional to 101,748.78, 140,251.49 and 80,203.59 is: 110,553.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,748.78 : 140,251.49 = 80,203.59 : x
  2. Step 2: Convert to fraction form
    101,748.78/140,251.49 = 80,203.59/x
  3. Step 3: Cross multiply
    101,748.78x = 140,251.49 × 80,203.59
  4. Step 4: Simplify right side
    101,748.78x = 11,248,671,898.57
  5. Step 5: Solve for x
    x = 11,248,671,898.57/101,748.78
  6. Step 6: Final answer
    x = 110,553.39

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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.