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Finding the Third Proportional to 84,769.03 and 128,245.78

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Solution

The third proportional to 84,769.03 and 128,245.78 is: 194,021.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,769.03 : 128,245.78 = 128,245.78 : x
  2. Step 2: Convert to fraction form
    84,769.03/128,245.78 = 128,245.78/x
  3. Step 3: Cross multiply
    84,769.03x = 128,245.78 × 128,245.78
  4. Step 4: Simplify right side
    84,769.03x = 16,446,980,408.42
  5. Step 5: Solve for x
    x = 16,446,980,408.42/84,769.03
  6. Step 6: Final answer
    x = 194,021.10

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.