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Finding the Third Proportional to 71,570 and 106,995

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Solution

The third proportional to 71,570 and 106,995 is: 159,954.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,570 : 106,995 = 106,995 : x
  2. Step 2: Convert to fraction form
    71,570/106,995 = 106,995/x
  3. Step 3: Cross multiply
    71,570x = 106,995 × 106,995
  4. Step 4: Simplify right side
    71,570x = 11,447,930,025
  5. Step 5: Solve for x
    x = 11,447,930,025/71,570
  6. Step 6: Final answer
    x = 159,954.31

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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.