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Finding the Fourth Proportional to 147.53, 221.36 and 109.34

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Solution

The fourth proportional to 147.53, 221.36 and 109.34 is: 164.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    147.53 : 221.36 = 109.34 : x
  2. Step 2: Convert to fraction form
    147.53/221.36 = 109.34/x
  3. Step 3: Cross multiply
    147.53x = 221.36 × 109.34
  4. Step 4: Simplify right side
    147.53x = 24,202.68
  5. Step 5: Solve for x
    x = 24,202.68/147.53
  6. Step 6: Final answer
    x = 164.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.