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Finding the Third Proportional to 77,864 and 120,299

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Solution

The third proportional to 77,864 and 120,299 is: 185,860.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,864 : 120,299 = 120,299 : x
  2. Step 2: Convert to fraction form
    77,864/120,299 = 120,299/x
  3. Step 3: Cross multiply
    77,864x = 120,299 × 120,299
  4. Step 4: Simplify right side
    77,864x = 14,471,849,401
  5. Step 5: Solve for x
    x = 14,471,849,401/77,864
  6. Step 6: Final answer
    x = 185,860.60

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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.