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Finding the Fourth Proportional to 141.37, 194.70 and 116.80

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Solution

The fourth proportional to 141.37, 194.70 and 116.80 is: 160.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.37 : 194.70 = 116.80 : x
  2. Step 2: Convert to fraction form
    141.37/194.70 = 116.80/x
  3. Step 3: Cross multiply
    141.37x = 194.70 × 116.80
  4. Step 4: Simplify right side
    141.37x = 22,740.91
  5. Step 5: Solve for x
    x = 22,740.91/141.37
  6. Step 6: Final answer
    x = 160.86

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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.