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Finding the Fourth Proportional to 160.03, 220.41 and 138.16

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Solution

The fourth proportional to 160.03, 220.41 and 138.16 is: 190.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    160.03 : 220.41 = 138.16 : x
  2. Step 2: Convert to fraction form
    160.03/220.41 = 138.16/x
  3. Step 3: Cross multiply
    160.03x = 220.41 × 138.16
  4. Step 4: Simplify right side
    160.03x = 30,451.85
  5. Step 5: Solve for x
    x = 30,451.85/160.03
  6. Step 6: Final answer
    x = 190.29

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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.