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Finding the Fourth Proportional to 158.90, 219.06 and 126.02

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Solution

The fourth proportional to 158.90, 219.06 and 126.02 is: 173.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    158.90 : 219.06 = 126.02 : x
  2. Step 2: Convert to fraction form
    158.90/219.06 = 126.02/x
  3. Step 3: Cross multiply
    158.90x = 219.06 × 126.02
  4. Step 4: Simplify right side
    158.90x = 27,605.94
  5. Step 5: Solve for x
    x = 27,605.94/158.90
  6. Step 6: Final answer
    x = 173.73

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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.