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Finding the Third Proportional to 64,528 and 138,944

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Solution

The third proportional to 64,528 and 138,944 is: 299,179.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,528 : 138,944 = 138,944 : x
  2. Step 2: Convert to fraction form
    64,528/138,944 = 138,944/x
  3. Step 3: Cross multiply
    64,528x = 138,944 × 138,944
  4. Step 4: Simplify right side
    64,528x = 19,305,435,136
  5. Step 5: Solve for x
    x = 19,305,435,136/64,528
  6. Step 6: Final answer
    x = 299,179.20

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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.