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Finding the Fourth Proportional to 101,748.40, 140,250.97 and 80,203.21

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Solution

The fourth proportional to 101,748.40, 140,250.97 and 80,203.21 is: 110,552.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,748.40 : 140,250.97 = 80,203.21 : x
  2. Step 2: Convert to fraction form
    101,748.40/140,250.97 = 80,203.21/x
  3. Step 3: Cross multiply
    101,748.40x = 140,250.97 × 80,203.21
  4. Step 4: Simplify right side
    101,748.40x = 11,248,577,598.60
  5. Step 5: Solve for x
    x = 11,248,577,598.60/101,748.40
  6. Step 6: Final answer
    x = 110,552.87

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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.