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Finding the Fourth Proportional to 159.36, 220.02 and 126.48

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Solution

The fourth proportional to 159.36, 220.02 and 126.48 is: 174.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    159.36 : 220.02 = 126.48 : x
  2. Step 2: Convert to fraction form
    159.36/220.02 = 126.48/x
  3. Step 3: Cross multiply
    159.36x = 220.02 × 126.48
  4. Step 4: Simplify right side
    159.36x = 27,828.13
  5. Step 5: Solve for x
    x = 27,828.13/159.36
  6. Step 6: Final answer
    x = 174.62

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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.