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Finding the Third Proportional to 112,243 and 172,515

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Solution

The third proportional to 112,243 and 172,515 is: 265,151.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,243 : 172,515 = 172,515 : x
  2. Step 2: Convert to fraction form
    112,243/172,515 = 172,515/x
  3. Step 3: Cross multiply
    112,243x = 172,515 × 172,515
  4. Step 4: Simplify right side
    112,243x = 29,761,425,225
  5. Step 5: Solve for x
    x = 29,761,425,225/112,243
  6. Step 6: Final answer
    x = 265,151.73

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.