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Finding the Third Proportional to 70,858.50 and 108,169.50

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Solution

The third proportional to 70,858.50 and 108,169.50 is: 165,126.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,858.50 : 108,169.50 = 108,169.50 : x
  2. Step 2: Convert to fraction form
    70,858.50/108,169.50 = 108,169.50/x
  3. Step 3: Cross multiply
    70,858.50x = 108,169.50 × 108,169.50
  4. Step 4: Simplify right side
    70,858.50x = 11,700,640,730.25
  5. Step 5: Solve for x
    x = 11,700,640,730.25/70,858.50
  6. Step 6: Final answer
    x = 165,126.85

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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.