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Finding the Fourth Proportional to 101.44, 139.99 and 55.44

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Solution

The fourth proportional to 101.44, 139.99 and 55.44 is: 76.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    101.44 : 139.99 = 55.44 : x
  2. Step 2: Convert to fraction form
    101.44/139.99 = 55.44/x
  3. Step 3: Cross multiply
    101.44x = 139.99 × 55.44
  4. Step 4: Simplify right side
    101.44x = 7,761.05
  5. Step 5: Solve for x
    x = 7,761.05/101.44
  6. Step 6: Final answer
    x = 76.51

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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.