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Finding the Third Proportional to 100,640 and 136,200

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Solution

The third proportional to 100,640 and 136,200 is: 184,324.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,640 : 136,200 = 136,200 : x
  2. Step 2: Convert to fraction form
    100,640/136,200 = 136,200/x
  3. Step 3: Cross multiply
    100,640x = 136,200 × 136,200
  4. Step 4: Simplify right side
    100,640x = 18,550,440,000
  5. Step 5: Solve for x
    x = 18,550,440,000/100,640
  6. Step 6: Final answer
    x = 184,324.72

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.