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Finding the Fourth Proportional to 144.62, 199.53 and 100.94

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Solution

The fourth proportional to 144.62, 199.53 and 100.94 is: 139.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    144.62 : 199.53 = 100.94 : x
  2. Step 2: Convert to fraction form
    144.62/199.53 = 100.94/x
  3. Step 3: Cross multiply
    144.62x = 199.53 × 100.94
  4. Step 4: Simplify right side
    144.62x = 20,140.56
  5. Step 5: Solve for x
    x = 20,140.56/144.62
  6. Step 6: Final answer
    x = 139.27

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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.