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Finding the Third Proportional to 76,212 and 116,515

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Solution

The third proportional to 76,212 and 116,515 is: 178,131.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,212 : 116,515 = 116,515 : x
  2. Step 2: Convert to fraction form
    76,212/116,515 = 116,515/x
  3. Step 3: Cross multiply
    76,212x = 116,515 × 116,515
  4. Step 4: Simplify right side
    76,212x = 13,575,745,225
  5. Step 5: Solve for x
    x = 13,575,745,225/76,212
  6. Step 6: Final answer
    x = 178,131.33

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.