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Finding the Third Proportional to 69,156 and 106,976

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Solution

The third proportional to 69,156 and 106,976 is: 165,478.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,156 : 106,976 = 106,976 : x
  2. Step 2: Convert to fraction form
    69,156/106,976 = 106,976/x
  3. Step 3: Cross multiply
    69,156x = 106,976 × 106,976
  4. Step 4: Simplify right side
    69,156x = 11,443,864,576
  5. Step 5: Solve for x
    x = 11,443,864,576/69,156
  6. Step 6: Final answer
    x = 165,478.98

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.