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Finding the Third Proportional to 79,890,174 and 172,121,628

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Solution

The third proportional to 79,890,174 and 172,121,628 is: 370,832,273.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,890,174 : 172,121,628 = 172,121,628 : x
  2. Step 2: Convert to fraction form
    79,890,174/172,121,628 = 172,121,628/x
  3. Step 3: Cross multiply
    79,890,174x = 172,121,628 × 172,121,628
  4. Step 4: Simplify right side
    79,890,174x = 29,625,854,825,370,384
  5. Step 5: Solve for x
    x = 29,625,854,825,370,384/79,890,174
  6. Step 6: Final answer
    x = 370,832,273.13

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.