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Finding the Third Proportional to 65,911 and 102,143

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Solution

The third proportional to 65,911 and 102,143 is: 158,292.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,911 : 102,143 = 102,143 : x
  2. Step 2: Convert to fraction form
    65,911/102,143 = 102,143/x
  3. Step 3: Cross multiply
    65,911x = 102,143 × 102,143
  4. Step 4: Simplify right side
    65,911x = 10,433,192,449
  5. Step 5: Solve for x
    x = 10,433,192,449/65,911
  6. Step 6: Final answer
    x = 158,292.13

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.