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Finding the Third Proportional to 71,430 and 106,299

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Solution

The third proportional to 71,430 and 106,299 is: 158,189.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,430 : 106,299 = 106,299 : x
  2. Step 2: Convert to fraction form
    71,430/106,299 = 106,299/x
  3. Step 3: Cross multiply
    71,430x = 106,299 × 106,299
  4. Step 4: Simplify right side
    71,430x = 11,299,477,401
  5. Step 5: Solve for x
    x = 11,299,477,401/71,430
  6. Step 6: Final answer
    x = 158,189.52

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.