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Finding the Third Proportional to 109,172 and 163,911

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Solution

The third proportional to 109,172 and 163,911 is: 246,096.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,172 : 163,911 = 163,911 : x
  2. Step 2: Convert to fraction form
    109,172/163,911 = 163,911/x
  3. Step 3: Cross multiply
    109,172x = 163,911 × 163,911
  4. Step 4: Simplify right side
    109,172x = 26,866,815,921
  5. Step 5: Solve for x
    x = 26,866,815,921/109,172
  6. Step 6: Final answer
    x = 246,096.21

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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.