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Finding the Fourth Proportional to 166.88, 249.84 and 121.04

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Solution

The fourth proportional to 166.88, 249.84 and 121.04 is: 181.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    166.88 : 249.84 = 121.04 : x
  2. Step 2: Convert to fraction form
    166.88/249.84 = 121.04/x
  3. Step 3: Cross multiply
    166.88x = 249.84 × 121.04
  4. Step 4: Simplify right side
    166.88x = 30,240.63
  5. Step 5: Solve for x
    x = 30,240.63/166.88
  6. Step 6: Final answer
    x = 181.21

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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.