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Finding the Fourth Proportional to 166.99, 230.48 and 111.73

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Solution

The fourth proportional to 166.99, 230.48 and 111.73 is: 154.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    166.99 : 230.48 = 111.73 : x
  2. Step 2: Convert to fraction form
    166.99/230.48 = 111.73/x
  3. Step 3: Cross multiply
    166.99x = 230.48 × 111.73
  4. Step 4: Simplify right side
    166.99x = 25,751.53
  5. Step 5: Solve for x
    x = 25,751.53/166.99
  6. Step 6: Final answer
    x = 154.21

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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.