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Finding the Fourth Proportional to 159.19, 219.54 and 109.32

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Solution

The fourth proportional to 159.19, 219.54 and 109.32 is: 150.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    159.19 : 219.54 = 109.32 : x
  2. Step 2: Convert to fraction form
    159.19/219.54 = 109.32/x
  3. Step 3: Cross multiply
    159.19x = 219.54 × 109.32
  4. Step 4: Simplify right side
    159.19x = 24,000.11
  5. Step 5: Solve for x
    x = 24,000.11/159.19
  6. Step 6: Final answer
    x = 150.76

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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.