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Finding the Third Proportional to 78,928 and 120,363

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Solution

The third proportional to 78,928 and 120,363 is: 183,550.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,928 : 120,363 = 120,363 : x
  2. Step 2: Convert to fraction form
    78,928/120,363 = 120,363/x
  3. Step 3: Cross multiply
    78,928x = 120,363 × 120,363
  4. Step 4: Simplify right side
    78,928x = 14,487,251,769
  5. Step 5: Solve for x
    x = 14,487,251,769/78,928
  6. Step 6: Final answer
    x = 183,550.22

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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.