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Finding the Third Proportional to 77,738,118 and 170,120,460

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Solution

The third proportional to 77,738,118 and 170,120,460 is: 372,288,031.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,738,118 : 170,120,460 = 170,120,460 : x
  2. Step 2: Convert to fraction form
    77,738,118/170,120,460 = 170,120,460/x
  3. Step 3: Cross multiply
    77,738,118x = 170,120,460 × 170,120,460
  4. Step 4: Simplify right side
    77,738,118x = 28,940,970,910,611,600
  5. Step 5: Solve for x
    x = 28,940,970,910,611,600/77,738,118
  6. Step 6: Final answer
    x = 372,288,031.34

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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.