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Finding the Fourth Proportional to 166.12, 249.21 and 119.94

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Solution

The fourth proportional to 166.12, 249.21 and 119.94 is: 179.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    166.12 : 249.21 = 119.94 : x
  2. Step 2: Convert to fraction form
    166.12/249.21 = 119.94/x
  3. Step 3: Cross multiply
    166.12x = 249.21 × 119.94
  4. Step 4: Simplify right side
    166.12x = 29,890.25
  5. Step 5: Solve for x
    x = 29,890.25/166.12
  6. Step 6: Final answer
    x = 179.93

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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.