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Finding the Third Proportional to 77,716.50 and 103,155.75

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Solution

The third proportional to 77,716.50 and 103,155.75 is: 136,922.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,716.50 : 103,155.75 = 103,155.75 : x
  2. Step 2: Convert to fraction form
    77,716.50/103,155.75 = 103,155.75/x
  3. Step 3: Cross multiply
    77,716.50x = 103,155.75 × 103,155.75
  4. Step 4: Simplify right side
    77,716.50x = 10,641,108,758.06
  5. Step 5: Solve for x
    x = 10,641,108,758.06/77,716.50
  6. Step 6: Final answer
    x = 136,922.13

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.