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Finding the Fourth Proportional to 166.88, 230.34 and 101.42

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Solution

The fourth proportional to 166.88, 230.34 and 101.42 is: 139.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    166.88 : 230.34 = 101.42 : x
  2. Step 2: Convert to fraction form
    166.88/230.34 = 101.42/x
  3. Step 3: Cross multiply
    166.88x = 230.34 × 101.42
  4. Step 4: Simplify right side
    166.88x = 23,361.08
  5. Step 5: Solve for x
    x = 23,361.08/166.88
  6. Step 6: Final answer
    x = 139.99

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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.