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Finding the Fourth Proportional to 101.82, 140.39 and 94.53

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Solution

The fourth proportional to 101.82, 140.39 and 94.53 is: 130.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    101.82 : 140.39 = 94.53 : x
  2. Step 2: Convert to fraction form
    101.82/140.39 = 94.53/x
  3. Step 3: Cross multiply
    101.82x = 140.39 × 94.53
  4. Step 4: Simplify right side
    101.82x = 13,270.95
  5. Step 5: Solve for x
    x = 13,270.95/101.82
  6. Step 6: Final answer
    x = 130.34

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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.