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Finding the Fourth Proportional to 88,144, 132,216 and 22,480

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Solution

The fourth proportional to 88,144, 132,216 and 22,480 is: 33,720

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,144 : 132,216 = 22,480 : x
  2. Step 2: Convert to fraction form
    88,144/132,216 = 22,480/x
  3. Step 3: Cross multiply
    88,144x = 132,216 × 22,480
  4. Step 4: Simplify right side
    88,144x = 2,972,215,680
  5. Step 5: Solve for x
    x = 2,972,215,680/88,144
  6. Step 6: Final answer
    x = 33,720

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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.