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Finding the Fourth Proportional to 166.88, 230.36 and 108.69

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Solution

The fourth proportional to 166.88, 230.36 and 108.69 is: 150.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    166.88 : 230.36 = 108.69 : x
  2. Step 2: Convert to fraction form
    166.88/230.36 = 108.69/x
  3. Step 3: Cross multiply
    166.88x = 230.36 × 108.69
  4. Step 4: Simplify right side
    166.88x = 25,037.28
  5. Step 5: Solve for x
    x = 25,037.28/166.88
  6. Step 6: Final answer
    x = 150.04

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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.