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Finding the Fourth Proportional to 141.21, 194.60 and 116.64

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Solution

The fourth proportional to 141.21, 194.60 and 116.64 is: 160.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.21 : 194.60 = 116.64 : x
  2. Step 2: Convert to fraction form
    141.21/194.60 = 116.64/x
  3. Step 3: Cross multiply
    141.21x = 194.60 × 116.64
  4. Step 4: Simplify right side
    141.21x = 22,698.44
  5. Step 5: Solve for x
    x = 22,698.44/141.21
  6. Step 6: Final answer
    x = 160.74

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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.