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Finding the Third Proportional to 85,275 and 127,912.50

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Solution

The third proportional to 85,275 and 127,912.50 is: 191,868.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,275 : 127,912.50 = 127,912.50 : x
  2. Step 2: Convert to fraction form
    85,275/127,912.50 = 127,912.50/x
  3. Step 3: Cross multiply
    85,275x = 127,912.50 × 127,912.50
  4. Step 4: Simplify right side
    85,275x = 16,361,607,656.25
  5. Step 5: Solve for x
    x = 16,361,607,656.25/85,275
  6. Step 6: Final answer
    x = 191,868.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.