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Finding the Fourth Proportional to 167.82, 252.23 and 139.12

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Solution

The fourth proportional to 167.82, 252.23 and 139.12 is: 209.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    167.82 : 252.23 = 139.12 : x
  2. Step 2: Convert to fraction form
    167.82/252.23 = 139.12/x
  3. Step 3: Cross multiply
    167.82x = 252.23 × 139.12
  4. Step 4: Simplify right side
    167.82x = 35,090.24
  5. Step 5: Solve for x
    x = 35,090.24/167.82
  6. Step 6: Final answer
    x = 209.09

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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.