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Finding the Fourth Proportional to 166.74, 230.11 and 104.55

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Solution

The fourth proportional to 166.74, 230.11 and 104.55 is: 144.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    166.74 : 230.11 = 104.55 : x
  2. Step 2: Convert to fraction form
    166.74/230.11 = 104.55/x
  3. Step 3: Cross multiply
    166.74x = 230.11 × 104.55
  4. Step 4: Simplify right side
    166.74x = 24,059.14
  5. Step 5: Solve for x
    x = 24,059.14/166.74
  6. Step 6: Final answer
    x = 144.29

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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.