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Finding the Fourth Proportional to 94.08, 141.48 and 82.20

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Solution

The fourth proportional to 94.08, 141.48 and 82.20 is: 123.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    94.08 : 141.48 = 82.20 : x
  2. Step 2: Convert to fraction form
    94.08/141.48 = 82.20/x
  3. Step 3: Cross multiply
    94.08x = 141.48 × 82.20
  4. Step 4: Simplify right side
    94.08x = 11,629.66
  5. Step 5: Solve for x
    x = 11,629.66/94.08
  6. Step 6: Final answer
    x = 123.61

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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.