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Finding the Fourth Proportional to 141.36, 194.88 and 104.48

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Solution

The fourth proportional to 141.36, 194.88 and 104.48 is: 144.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.36 : 194.88 = 104.48 : x
  2. Step 2: Convert to fraction form
    141.36/194.88 = 104.48/x
  3. Step 3: Cross multiply
    141.36x = 194.88 × 104.48
  4. Step 4: Simplify right side
    141.36x = 20,361.06
  5. Step 5: Solve for x
    x = 20,361.06/141.36
  6. Step 6: Final answer
    x = 144.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.