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Finding the Fourth Proportional to 141.12, 194.58 and 119.34

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Solution

The fourth proportional to 141.12, 194.58 and 119.34 is: 164.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.12 : 194.58 = 119.34 : x
  2. Step 2: Convert to fraction form
    141.12/194.58 = 119.34/x
  3. Step 3: Cross multiply
    141.12x = 194.58 × 119.34
  4. Step 4: Simplify right side
    141.12x = 23,221.18
  5. Step 5: Solve for x
    x = 23,221.18/141.12
  6. Step 6: Final answer
    x = 164.55

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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.