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Finding the Fourth Proportional to 100.04, 137.84 and 82.52

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Solution

The fourth proportional to 100.04, 137.84 and 82.52 is: 113.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    100.04 : 137.84 = 82.52 : x
  2. Step 2: Convert to fraction form
    100.04/137.84 = 82.52/x
  3. Step 3: Cross multiply
    100.04x = 137.84 × 82.52
  4. Step 4: Simplify right side
    100.04x = 11,373.97
  5. Step 5: Solve for x
    x = 11,373.97/100.04
  6. Step 6: Final answer
    x = 113.70

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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.