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Finding the Third Proportional to 82,890 and 180,450

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Solution

The third proportional to 82,890 and 180,450 is: 392,836.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,890 : 180,450 = 180,450 : x
  2. Step 2: Convert to fraction form
    82,890/180,450 = 180,450/x
  3. Step 3: Cross multiply
    82,890x = 180,450 × 180,450
  4. Step 4: Simplify right side
    82,890x = 32,562,202,500
  5. Step 5: Solve for x
    x = 32,562,202,500/82,890
  6. Step 6: Final answer
    x = 392,836.32

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.