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Finding the Third Proportional to 69,719.50 and 106,672

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Solution

The third proportional to 69,719.50 and 106,672 is: 163,209.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,719.50 : 106,672 = 106,672 : x
  2. Step 2: Convert to fraction form
    69,719.50/106,672 = 106,672/x
  3. Step 3: Cross multiply
    69,719.50x = 106,672 × 106,672
  4. Step 4: Simplify right side
    69,719.50x = 11,378,915,584
  5. Step 5: Solve for x
    x = 11,378,915,584/69,719.50
  6. Step 6: Final answer
    x = 163,209.94

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.