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Finding the Fourth Proportional to 88.56, 122.04 and 79.92

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Solution

The fourth proportional to 88.56, 122.04 and 79.92 is: 110.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    88.56 : 122.04 = 79.92 : x
  2. Step 2: Convert to fraction form
    88.56/122.04 = 79.92/x
  3. Step 3: Cross multiply
    88.56x = 122.04 × 79.92
  4. Step 4: Simplify right side
    88.56x = 9,753.44
  5. Step 5: Solve for x
    x = 9,753.44/88.56
  6. Step 6: Final answer
    x = 110.13

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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.