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Finding the Third Proportional to 54,912 and 120,515

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Solution

The third proportional to 54,912 and 120,515 is: 264,493.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,912 : 120,515 = 120,515 : x
  2. Step 2: Convert to fraction form
    54,912/120,515 = 120,515/x
  3. Step 3: Cross multiply
    54,912x = 120,515 × 120,515
  4. Step 4: Simplify right side
    54,912x = 14,523,865,225
  5. Step 5: Solve for x
    x = 14,523,865,225/54,912
  6. Step 6: Final answer
    x = 264,493.47

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.