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Finding the Fourth Proportional to 121.26, 167.16 and 94.98

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Solution

The fourth proportional to 121.26, 167.16 and 94.98 is: 130.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    121.26 : 167.16 = 94.98 : x
  2. Step 2: Convert to fraction form
    121.26/167.16 = 94.98/x
  3. Step 3: Cross multiply
    121.26x = 167.16 × 94.98
  4. Step 4: Simplify right side
    121.26x = 15,876.86
  5. Step 5: Solve for x
    x = 15,876.86/121.26
  6. Step 6: Final answer
    x = 130.93

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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.