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Finding the Fourth Proportional to 111,330.90, 166,996.35 and 100,250.10

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Solution

The fourth proportional to 111,330.90, 166,996.35 and 100,250.10 is: 150,375.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,330.90 : 166,996.35 = 100,250.10 : x
  2. Step 2: Convert to fraction form
    111,330.90/166,996.35 = 100,250.10/x
  3. Step 3: Cross multiply
    111,330.90x = 166,996.35 × 100,250.10
  4. Step 4: Simplify right side
    111,330.90x = 16,741,400,787.14
  5. Step 5: Solve for x
    x = 16,741,400,787.14/111,330.90
  6. Step 6: Final answer
    x = 150,375.15

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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.