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Finding the Fourth Proportional to 123.25, 184.53 and 92.72

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Solution

The fourth proportional to 123.25, 184.53 and 92.72 is: 138.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    123.25 : 184.53 = 92.72 : x
  2. Step 2: Convert to fraction form
    123.25/184.53 = 92.72/x
  3. Step 3: Cross multiply
    123.25x = 184.53 × 92.72
  4. Step 4: Simplify right side
    123.25x = 17,109.39
  5. Step 5: Solve for x
    x = 17,109.39/123.25
  6. Step 6: Final answer
    x = 138.82

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.