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Finding the Third Proportional to 78,749,766 and 123,253,899

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Solution

The third proportional to 78,749,766 and 123,253,899 is: 192,908,809.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,749,766 : 123,253,899 = 123,253,899 : x
  2. Step 2: Convert to fraction form
    78,749,766/123,253,899 = 123,253,899/x
  3. Step 3: Cross multiply
    78,749,766x = 123,253,899 × 123,253,899
  4. Step 4: Simplify right side
    78,749,766x = 15,191,523,618,702,200
  5. Step 5: Solve for x
    x = 15,191,523,618,702,200/78,749,766
  6. Step 6: Final answer
    x = 192,908,809.64

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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.