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Finding the Third Proportional to 86,775 and 189,423

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Solution

The third proportional to 86,775 and 189,423 is: 413,495.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,775 : 189,423 = 189,423 : x
  2. Step 2: Convert to fraction form
    86,775/189,423 = 189,423/x
  3. Step 3: Cross multiply
    86,775x = 189,423 × 189,423
  4. Step 4: Simplify right side
    86,775x = 35,881,072,929
  5. Step 5: Solve for x
    x = 35,881,072,929/86,775
  6. Step 6: Final answer
    x = 413,495.51

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.