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Finding the Third Proportional to 64,853 and 139,713

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Solution

The third proportional to 64,853 and 139,713 is: 300,984.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,853 : 139,713 = 139,713 : x
  2. Step 2: Convert to fraction form
    64,853/139,713 = 139,713/x
  3. Step 3: Cross multiply
    64,853x = 139,713 × 139,713
  4. Step 4: Simplify right side
    64,853x = 19,519,722,369
  5. Step 5: Solve for x
    x = 19,519,722,369/64,853
  6. Step 6: Final answer
    x = 300,984.11

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.