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Finding the Third Proportional to 68,271 and 139,944

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Solution

The third proportional to 68,271 and 139,944 is: 286,861.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,271 : 139,944 = 139,944 : x
  2. Step 2: Convert to fraction form
    68,271/139,944 = 139,944/x
  3. Step 3: Cross multiply
    68,271x = 139,944 × 139,944
  4. Step 4: Simplify right side
    68,271x = 19,584,323,136
  5. Step 5: Solve for x
    x = 19,584,323,136/68,271
  6. Step 6: Final answer
    x = 286,861.52

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.