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Finding the Third Proportional to 69,211.50 and 106,878.75

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Solution

The third proportional to 69,211.50 and 106,878.75 is: 165,045.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,211.50 : 106,878.75 = 106,878.75 : x
  2. Step 2: Convert to fraction form
    69,211.50/106,878.75 = 106,878.75/x
  3. Step 3: Cross multiply
    69,211.50x = 106,878.75 × 106,878.75
  4. Step 4: Simplify right side
    69,211.50x = 11,423,067,201.56
  5. Step 5: Solve for x
    x = 11,423,067,201.56/69,211.50
  6. Step 6: Final answer
    x = 165,045.80

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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.