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Finding the Fourth Proportional to 122.00, 168.44 and 93.94

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Solution

The fourth proportional to 122.00, 168.44 and 93.94 is: 129.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    122.00 : 168.44 = 93.94 : x
  2. Step 2: Convert to fraction form
    122.00/168.44 = 93.94/x
  3. Step 3: Cross multiply
    122.00x = 168.44 × 93.94
  4. Step 4: Simplify right side
    122.00x = 15,822.36
  5. Step 5: Solve for x
    x = 15,822.36/122.00
  6. Step 6: Final answer
    x = 129.70

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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.