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Finding the Third Proportional to 75,868.50 and 109,291.50

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Solution

The third proportional to 75,868.50 and 109,291.50 is: 157,438.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,868.50 : 109,291.50 = 109,291.50 : x
  2. Step 2: Convert to fraction form
    75,868.50/109,291.50 = 109,291.50/x
  3. Step 3: Cross multiply
    75,868.50x = 109,291.50 × 109,291.50
  4. Step 4: Simplify right side
    75,868.50x = 11,944,631,972.25
  5. Step 5: Solve for x
    x = 11,944,631,972.25/75,868.50
  6. Step 6: Final answer
    x = 157,438.62

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.