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Finding the Third Proportional to 69,072.75 and 109,167.75

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Solution

The third proportional to 69,072.75 and 109,167.75 is: 172,536.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,072.75 : 109,167.75 = 109,167.75 : x
  2. Step 2: Convert to fraction form
    69,072.75/109,167.75 = 109,167.75/x
  3. Step 3: Cross multiply
    69,072.75x = 109,167.75 × 109,167.75
  4. Step 4: Simplify right side
    69,072.75x = 11,917,597,640.06
  5. Step 5: Solve for x
    x = 11,917,597,640.06/69,072.75
  6. Step 6: Final answer
    x = 172,536.89

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.