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Finding the Third Proportional to 63,378 and 139,149

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Solution

The third proportional to 63,378 and 139,149 is: 305,507.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,378 : 139,149 = 139,149 : x
  2. Step 2: Convert to fraction form
    63,378/139,149 = 139,149/x
  3. Step 3: Cross multiply
    63,378x = 139,149 × 139,149
  4. Step 4: Simplify right side
    63,378x = 19,362,444,201
  5. Step 5: Solve for x
    x = 19,362,444,201/63,378
  6. Step 6: Final answer
    x = 305,507.34

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.