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Finding the Third Proportional to 118,200 and 172,245

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Solution

The third proportional to 118,200 and 172,245 is: 251,001.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,200 : 172,245 = 172,245 : x
  2. Step 2: Convert to fraction form
    118,200/172,245 = 172,245/x
  3. Step 3: Cross multiply
    118,200x = 172,245 × 172,245
  4. Step 4: Simplify right side
    118,200x = 29,668,340,025
  5. Step 5: Solve for x
    x = 29,668,340,025/118,200
  6. Step 6: Final answer
    x = 251,001.18

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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.