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Finding the Fourth Proportional to 159.36, 219.80 and 136.26

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Solution

The fourth proportional to 159.36, 219.80 and 136.26 is: 187.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    159.36 : 219.80 = 136.26 : x
  2. Step 2: Convert to fraction form
    159.36/219.80 = 136.26/x
  3. Step 3: Cross multiply
    159.36x = 219.80 × 136.26
  4. Step 4: Simplify right side
    159.36x = 29,949.95
  5. Step 5: Solve for x
    x = 29,949.95/159.36
  6. Step 6: Final answer
    x = 187.94

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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.