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Finding the Third Proportional to 109,721 and 163,863.50

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Solution

The third proportional to 109,721 and 163,863.50 is: 244,722.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,721 : 163,863.50 = 163,863.50 : x
  2. Step 2: Convert to fraction form
    109,721/163,863.50 = 163,863.50/x
  3. Step 3: Cross multiply
    109,721x = 163,863.50 × 163,863.50
  4. Step 4: Simplify right side
    109,721x = 26,851,246,632.25
  5. Step 5: Solve for x
    x = 26,851,246,632.25/109,721
  6. Step 6: Final answer
    x = 244,722.95

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.