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Finding the Fourth Proportional to 144.93, 200.08 and 100.73

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Solution

The fourth proportional to 144.93, 200.08 and 100.73 is: 139.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    144.93 : 200.08 = 100.73 : x
  2. Step 2: Convert to fraction form
    144.93/200.08 = 100.73/x
  3. Step 3: Cross multiply
    144.93x = 200.08 × 100.73
  4. Step 4: Simplify right side
    144.93x = 20,154.06
  5. Step 5: Solve for x
    x = 20,154.06/144.93
  6. Step 6: Final answer
    x = 139.06

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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.