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Finding the Fourth Proportional to 123.37, 184.36 and 100.28

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Solution

The fourth proportional to 123.37, 184.36 and 100.28 is: 149.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    123.37 : 184.36 = 100.28 : x
  2. Step 2: Convert to fraction form
    123.37/184.36 = 100.28/x
  3. Step 3: Cross multiply
    123.37x = 184.36 × 100.28
  4. Step 4: Simplify right side
    123.37x = 18,487.62
  5. Step 5: Solve for x
    x = 18,487.62/123.37
  6. Step 6: Final answer
    x = 149.86

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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.