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Finding the Third Proportional to 69,878.75 and 107,537

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Solution

The third proportional to 69,878.75 and 107,537 is: 165,489.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,878.75 : 107,537 = 107,537 : x
  2. Step 2: Convert to fraction form
    69,878.75/107,537 = 107,537/x
  3. Step 3: Cross multiply
    69,878.75x = 107,537 × 107,537
  4. Step 4: Simplify right side
    69,878.75x = 11,564,206,369
  5. Step 5: Solve for x
    x = 11,564,206,369/69,878.75
  6. Step 6: Final answer
    x = 165,489.60

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.