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Finding the Third Proportional to 86,424 and 133,321

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Solution

The third proportional to 86,424 and 133,321 is: 205,666.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,424 : 133,321 = 133,321 : x
  2. Step 2: Convert to fraction form
    86,424/133,321 = 133,321/x
  3. Step 3: Cross multiply
    86,424x = 133,321 × 133,321
  4. Step 4: Simplify right side
    86,424x = 17,774,489,041
  5. Step 5: Solve for x
    x = 17,774,489,041/86,424
  6. Step 6: Final answer
    x = 205,666.12

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.