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Finding the Third Proportional to 79,890,146 and 172,121,548

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Solution

The third proportional to 79,890,146 and 172,121,548 is: 370,832,058.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,890,146 : 172,121,548 = 172,121,548 : x
  2. Step 2: Convert to fraction form
    79,890,146/172,121,548 = 172,121,548/x
  3. Step 3: Cross multiply
    79,890,146x = 172,121,548 × 172,121,548
  4. Step 4: Simplify right side
    79,890,146x = 29,625,827,285,916,304
  5. Step 5: Solve for x
    x = 29,625,827,285,916,304/79,890,146
  6. Step 6: Final answer
    x = 370,832,058.39

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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.