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Finding the Fourth Proportional to 122.04, 169.26 and 117.92

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Solution

The fourth proportional to 122.04, 169.26 and 117.92 is: 163.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    122.04 : 169.26 = 117.92 : x
  2. Step 2: Convert to fraction form
    122.04/169.26 = 117.92/x
  3. Step 3: Cross multiply
    122.04x = 169.26 × 117.92
  4. Step 4: Simplify right side
    122.04x = 19,958.29
  5. Step 5: Solve for x
    x = 19,958.29/122.04
  6. Step 6: Final answer
    x = 163.54

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.