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Finding the Third Proportional to 64,959 and 139,588

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Solution

The third proportional to 64,959 and 139,588 is: 299,955.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,959 : 139,588 = 139,588 : x
  2. Step 2: Convert to fraction form
    64,959/139,588 = 139,588/x
  3. Step 3: Cross multiply
    64,959x = 139,588 × 139,588
  4. Step 4: Simplify right side
    64,959x = 19,484,809,744
  5. Step 5: Solve for x
    x = 19,484,809,744/64,959
  6. Step 6: Final answer
    x = 299,955.51

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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.