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Finding the Third Proportional to 90,072 and 135,156

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Solution

The third proportional to 90,072 and 135,156 is: 202,806.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,072 : 135,156 = 135,156 : x
  2. Step 2: Convert to fraction form
    90,072/135,156 = 135,156/x
  3. Step 3: Cross multiply
    90,072x = 135,156 × 135,156
  4. Step 4: Simplify right side
    90,072x = 18,267,144,336
  5. Step 5: Solve for x
    x = 18,267,144,336/90,072
  6. Step 6: Final answer
    x = 202,806.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.