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Finding the Fourth Proportional to 167.05, 229.93 and 123.31

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Solution

The fourth proportional to 167.05, 229.93 and 123.31 is: 169.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    167.05 : 229.93 = 123.31 : x
  2. Step 2: Convert to fraction form
    167.05/229.93 = 123.31/x
  3. Step 3: Cross multiply
    167.05x = 229.93 × 123.31
  4. Step 4: Simplify right side
    167.05x = 28,352.67
  5. Step 5: Solve for x
    x = 28,352.67/167.05
  6. Step 6: Final answer
    x = 169.73

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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.