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Finding the Fourth Proportional to 101,422.80, 152,134.20 and 100,110.60

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Solution

The fourth proportional to 101,422.80, 152,134.20 and 100,110.60 is: 150,165.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,422.80 : 152,134.20 = 100,110.60 : x
  2. Step 2: Convert to fraction form
    101,422.80/152,134.20 = 100,110.60/x
  3. Step 3: Cross multiply
    101,422.80x = 152,134.20 × 100,110.60
  4. Step 4: Simplify right side
    101,422.80x = 15,230,246,042.52
  5. Step 5: Solve for x
    x = 15,230,246,042.52/101,422.80
  6. Step 6: Final answer
    x = 150,165.90

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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.