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Finding the Fourth Proportional to 141.19, 193.72 and 133.45

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Solution

The fourth proportional to 141.19, 193.72 and 133.45 is: 183.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.19 : 193.72 = 133.45 : x
  2. Step 2: Convert to fraction form
    141.19/193.72 = 133.45/x
  3. Step 3: Cross multiply
    141.19x = 193.72 × 133.45
  4. Step 4: Simplify right side
    141.19x = 25,850.97
  5. Step 5: Solve for x
    x = 25,850.97/141.19
  6. Step 6: Final answer
    x = 183.10

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.