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Finding the Third Proportional to 121,837.50 and 187,512

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Solution

The third proportional to 121,837.50 and 187,512 is: 288,587.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,837.50 : 187,512 = 187,512 : x
  2. Step 2: Convert to fraction form
    121,837.50/187,512 = 187,512/x
  3. Step 3: Cross multiply
    121,837.50x = 187,512 × 187,512
  4. Step 4: Simplify right side
    121,837.50x = 35,160,750,144
  5. Step 5: Solve for x
    x = 35,160,750,144/121,837.50
  6. Step 6: Final answer
    x = 288,587.26

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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.