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Finding the Third Proportional to 86,190 and 133,767

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Solution

The third proportional to 86,190 and 133,767 is: 207,606.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,190 : 133,767 = 133,767 : x
  2. Step 2: Convert to fraction form
    86,190/133,767 = 133,767/x
  3. Step 3: Cross multiply
    86,190x = 133,767 × 133,767
  4. Step 4: Simplify right side
    86,190x = 17,893,610,289
  5. Step 5: Solve for x
    x = 17,893,610,289/86,190
  6. Step 6: Final answer
    x = 207,606.57

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.