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Finding the Third Proportional to 65,432,920 and 137,634,800

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Solution

The third proportional to 65,432,920 and 137,634,800 is: 289,507,761.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,432,920 : 137,634,800 = 137,634,800 : x
  2. Step 2: Convert to fraction form
    65,432,920/137,634,800 = 137,634,800/x
  3. Step 3: Cross multiply
    65,432,920x = 137,634,800 × 137,634,800
  4. Step 4: Simplify right side
    65,432,920x = 18,943,338,171,040,000
  5. Step 5: Solve for x
    x = 18,943,338,171,040,000/65,432,920
  6. Step 6: Final answer
    x = 289,507,761.09

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.