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Finding the Fourth Proportional to 122.16, 184.08 and 110.28

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Solution

The fourth proportional to 122.16, 184.08 and 110.28 is: 166.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    122.16 : 184.08 = 110.28 : x
  2. Step 2: Convert to fraction form
    122.16/184.08 = 110.28/x
  3. Step 3: Cross multiply
    122.16x = 184.08 × 110.28
  4. Step 4: Simplify right side
    122.16x = 20,300.34
  5. Step 5: Solve for x
    x = 20,300.34/122.16
  6. Step 6: Final answer
    x = 166.18

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.