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Finding the Third Proportional to 78,749,752.50 and 123,253,872.75

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Solution

The third proportional to 78,749,752.50 and 123,253,872.75 is: 192,908,760.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,749,752.50 : 123,253,872.75 = 123,253,872.75 : x
  2. Step 2: Convert to fraction form
    78,749,752.50/123,253,872.75 = 123,253,872.75/x
  3. Step 3: Cross multiply
    78,749,752.50x = 123,253,872.75 × 123,253,872.75
  4. Step 4: Simplify right side
    78,749,752.50x = 15,191,517,147,873,192
  5. Step 5: Solve for x
    x = 15,191,517,147,873,192/78,749,752.50
  6. Step 6: Final answer
    x = 192,908,760.54

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.