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Finding the Fourth Proportional to 166.67, 230.03 and 100.30

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Solution

The fourth proportional to 166.67, 230.03 and 100.30 is: 138.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    166.67 : 230.03 = 100.30 : x
  2. Step 2: Convert to fraction form
    166.67/230.03 = 100.30/x
  3. Step 3: Cross multiply
    166.67x = 230.03 × 100.30
  4. Step 4: Simplify right side
    166.67x = 23,072.01
  5. Step 5: Solve for x
    x = 23,072.01/166.67
  6. Step 6: Final answer
    x = 138.43

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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.