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Finding the Third Proportional to 81,639,826 and 176,266,788

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Solution

The third proportional to 81,639,826 and 176,266,788 is: 380,573,821.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,639,826 : 176,266,788 = 176,266,788 : x
  2. Step 2: Convert to fraction form
    81,639,826/176,266,788 = 176,266,788/x
  3. Step 3: Cross multiply
    81,639,826x = 176,266,788 × 176,266,788
  4. Step 4: Simplify right side
    81,639,826x = 31,069,980,551,836,944
  5. Step 5: Solve for x
    x = 31,069,980,551,836,944/81,639,826
  6. Step 6: Final answer
    x = 380,573,821.31

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.