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Finding the Third Proportional to 101,990 and 137,415

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Solution

The third proportional to 101,990 and 137,415 is: 185,144.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,990 : 137,415 = 137,415 : x
  2. Step 2: Convert to fraction form
    101,990/137,415 = 137,415/x
  3. Step 3: Cross multiply
    101,990x = 137,415 × 137,415
  4. Step 4: Simplify right side
    101,990x = 18,882,882,225
  5. Step 5: Solve for x
    x = 18,882,882,225/101,990
  6. Step 6: Final answer
    x = 185,144.45

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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.