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Finding the Third Proportional to 76,984 and 115,476

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Solution

The third proportional to 76,984 and 115,476 is: 173,214

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,984 : 115,476 = 115,476 : x
  2. Step 2: Convert to fraction form
    76,984/115,476 = 115,476/x
  3. Step 3: Cross multiply
    76,984x = 115,476 × 115,476
  4. Step 4: Simplify right side
    76,984x = 13,334,706,576
  5. Step 5: Solve for x
    x = 13,334,706,576/76,984
  6. Step 6: Final answer
    x = 173,214

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.