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Finding the Third Proportional to 64,543 and 138,973

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Solution

The third proportional to 64,543 and 138,973 is: 299,234.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,543 : 138,973 = 138,973 : x
  2. Step 2: Convert to fraction form
    64,543/138,973 = 138,973/x
  3. Step 3: Cross multiply
    64,543x = 138,973 × 138,973
  4. Step 4: Simplify right side
    64,543x = 19,313,494,729
  5. Step 5: Solve for x
    x = 19,313,494,729/64,543
  6. Step 6: Final answer
    x = 299,234.54

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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.