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Finding the Third Proportional to 68,131,570 and 149,453,558

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Solution

The third proportional to 68,131,570 and 149,453,558 is: 327,841,645.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,131,570 : 149,453,558 = 149,453,558 : x
  2. Step 2: Convert to fraction form
    68,131,570/149,453,558 = 149,453,558/x
  3. Step 3: Cross multiply
    68,131,570x = 149,453,558 × 149,453,558
  4. Step 4: Simplify right side
    68,131,570x = 22,336,365,998,859,364
  5. Step 5: Solve for x
    x = 22,336,365,998,859,364/68,131,570
  6. Step 6: Final answer
    x = 327,841,645.20

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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.