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Finding the Fourth Proportional to 141.68, 195.48 and 107.12

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Solution

The fourth proportional to 141.68, 195.48 and 107.12 is: 147.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.68 : 195.48 = 107.12 : x
  2. Step 2: Convert to fraction form
    141.68/195.48 = 107.12/x
  3. Step 3: Cross multiply
    141.68x = 195.48 × 107.12
  4. Step 4: Simplify right side
    141.68x = 20,939.82
  5. Step 5: Solve for x
    x = 20,939.82/141.68
  6. Step 6: Final answer
    x = 147.80

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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.