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Finding the Third Proportional to 129,960 and 190,328

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Solution

The third proportional to 129,960 and 190,328 is: 278,737.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,960 : 190,328 = 190,328 : x
  2. Step 2: Convert to fraction form
    129,960/190,328 = 190,328/x
  3. Step 3: Cross multiply
    129,960x = 190,328 × 190,328
  4. Step 4: Simplify right side
    129,960x = 36,224,747,584
  5. Step 5: Solve for x
    x = 36,224,747,584/129,960
  6. Step 6: Final answer
    x = 278,737.67

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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.