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Finding the Third Proportional to 81,609,912 and 172,430,500

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Solution

The third proportional to 81,609,912 and 172,430,500 is: 364,321,889.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,609,912 : 172,430,500 = 172,430,500 : x
  2. Step 2: Convert to fraction form
    81,609,912/172,430,500 = 172,430,500/x
  3. Step 3: Cross multiply
    81,609,912x = 172,430,500 × 172,430,500
  4. Step 4: Simplify right side
    81,609,912x = 29,732,277,330,250,000
  5. Step 5: Solve for x
    x = 29,732,277,330,250,000/81,609,912
  6. Step 6: Final answer
    x = 364,321,889.36

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These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.