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Finding the Fourth Proportional to 140.54, 211.02 and 100.18

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Solution

The fourth proportional to 140.54, 211.02 and 100.18 is: 150.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    140.54 : 211.02 = 100.18 : x
  2. Step 2: Convert to fraction form
    140.54/211.02 = 100.18/x
  3. Step 3: Cross multiply
    140.54x = 211.02 × 100.18
  4. Step 4: Simplify right side
    140.54x = 21,138.43
  5. Step 5: Solve for x
    x = 21,138.43/140.54
  6. Step 6: Final answer
    x = 150.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.