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Finding the Fourth Proportional to 123.44, 184.44 and 100.32

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Solution

The fourth proportional to 123.44, 184.44 and 100.32 is: 149.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    123.44 : 184.44 = 100.32 : x
  2. Step 2: Convert to fraction form
    123.44/184.44 = 100.32/x
  3. Step 3: Cross multiply
    123.44x = 184.44 × 100.32
  4. Step 4: Simplify right side
    123.44x = 18,503.02
  5. Step 5: Solve for x
    x = 18,503.02/123.44
  6. Step 6: Final answer
    x = 149.89

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.