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Finding the Third Proportional to 78,381 and 119,414.25

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Solution

The third proportional to 78,381 and 119,414.25 is: 181,928.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,381 : 119,414.25 = 119,414.25 : x
  2. Step 2: Convert to fraction form
    78,381/119,414.25 = 119,414.25/x
  3. Step 3: Cross multiply
    78,381x = 119,414.25 × 119,414.25
  4. Step 4: Simplify right side
    78,381x = 14,259,763,103.06
  5. Step 5: Solve for x
    x = 14,259,763,103.06/78,381
  6. Step 6: Final answer
    x = 181,928.82

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.