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Finding the Third Proportional to 129,962 and 190,331

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Solution

The third proportional to 129,962 and 190,331 is: 278,742.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,962 : 190,331 = 190,331 : x
  2. Step 2: Convert to fraction form
    129,962/190,331 = 190,331/x
  3. Step 3: Cross multiply
    129,962x = 190,331 × 190,331
  4. Step 4: Simplify right side
    129,962x = 36,225,889,561
  5. Step 5: Solve for x
    x = 36,225,889,561/129,962
  6. Step 6: Final answer
    x = 278,742.17

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.