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Finding the Third Proportional to 66,018.38 and 135,108

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Solution

The third proportional to 66,018.38 and 135,108 is: 276,501.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,018.38 : 135,108 = 135,108 : x
  2. Step 2: Convert to fraction form
    66,018.38/135,108 = 135,108/x
  3. Step 3: Cross multiply
    66,018.38x = 135,108 × 135,108
  4. Step 4: Simplify right side
    66,018.38x = 18,254,171,664
  5. Step 5: Solve for x
    x = 18,254,171,664/66,018.38
  6. Step 6: Final answer
    x = 276,501.38

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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.