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Finding the Fourth Proportional to 146.08, 218.80 and 111.76

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Solution

The fourth proportional to 146.08, 218.80 and 111.76 is: 167.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    146.08 : 218.80 = 111.76 : x
  2. Step 2: Convert to fraction form
    146.08/218.80 = 111.76/x
  3. Step 3: Cross multiply
    146.08x = 218.80 × 111.76
  4. Step 4: Simplify right side
    146.08x = 24,453.09
  5. Step 5: Solve for x
    x = 24,453.09/146.08
  6. Step 6: Final answer
    x = 167.40

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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.