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Finding the Fourth Proportional to 166.01, 229.11 and 100.56

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Solution

The fourth proportional to 166.01, 229.11 and 100.56 is: 138.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    166.01 : 229.11 = 100.56 : x
  2. Step 2: Convert to fraction form
    166.01/229.11 = 100.56/x
  3. Step 3: Cross multiply
    166.01x = 229.11 × 100.56
  4. Step 4: Simplify right side
    166.01x = 23,039.30
  5. Step 5: Solve for x
    x = 23,039.30/166.01
  6. Step 6: Final answer
    x = 138.78

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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.