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Finding the Fourth Proportional to 166.40, 229.62 and 125.14

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Solution

The fourth proportional to 166.40, 229.62 and 125.14 is: 172.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    166.40 : 229.62 = 125.14 : x
  2. Step 2: Convert to fraction form
    166.40/229.62 = 125.14/x
  3. Step 3: Cross multiply
    166.40x = 229.62 × 125.14
  4. Step 4: Simplify right side
    166.40x = 28,734.65
  5. Step 5: Solve for x
    x = 28,734.65/166.40
  6. Step 6: Final answer
    x = 172.68

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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.