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Finding the Fourth Proportional to 122.17, 168.33 and 94.48

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Solution

The fourth proportional to 122.17, 168.33 and 94.48 is: 130.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    122.17 : 168.33 = 94.48 : x
  2. Step 2: Convert to fraction form
    122.17/168.33 = 94.48/x
  3. Step 3: Cross multiply
    122.17x = 168.33 × 94.48
  4. Step 4: Simplify right side
    122.17x = 15,903.82
  5. Step 5: Solve for x
    x = 15,903.82/122.17
  6. Step 6: Final answer
    x = 130.18

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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.