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Finding the Third Proportional to 109,661 and 160,689

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Solution

The third proportional to 109,661 and 160,689 is: 235,461.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,661 : 160,689 = 160,689 : x
  2. Step 2: Convert to fraction form
    109,661/160,689 = 160,689/x
  3. Step 3: Cross multiply
    109,661x = 160,689 × 160,689
  4. Step 4: Simplify right side
    109,661x = 25,820,954,721
  5. Step 5: Solve for x
    x = 25,820,954,721/109,661
  6. Step 6: Final answer
    x = 235,461.60

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.