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Finding the Fourth Proportional to 140.88, 194.53 and 105.95

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Solution

The fourth proportional to 140.88, 194.53 and 105.95 is: 146.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    140.88 : 194.53 = 105.95 : x
  2. Step 2: Convert to fraction form
    140.88/194.53 = 105.95/x
  3. Step 3: Cross multiply
    140.88x = 194.53 × 105.95
  4. Step 4: Simplify right side
    140.88x = 20,610.67
  5. Step 5: Solve for x
    x = 20,610.67/140.88
  6. Step 6: Final answer
    x = 146.30

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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.