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Finding the Third Proportional to 81,868,510 and 179,118,918

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Solution

The third proportional to 81,868,510 and 179,118,918 is: 391,891,666.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,868,510 : 179,118,918 = 179,118,918 : x
  2. Step 2: Convert to fraction form
    81,868,510/179,118,918 = 179,118,918/x
  3. Step 3: Cross multiply
    81,868,510x = 179,118,918 × 179,118,918
  4. Step 4: Simplify right side
    81,868,510x = 32,083,586,785,490,724
  5. Step 5: Solve for x
    x = 32,083,586,785,490,724/81,868,510
  6. Step 6: Final answer
    x = 391,891,666.11

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.