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Finding the Third Proportional to 109,453.50 and 162,720

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Solution

The third proportional to 109,453.50 and 162,720 is: 241,909.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,453.50 : 162,720 = 162,720 : x
  2. Step 2: Convert to fraction form
    109,453.50/162,720 = 162,720/x
  3. Step 3: Cross multiply
    109,453.50x = 162,720 × 162,720
  4. Step 4: Simplify right side
    109,453.50x = 26,477,798,400
  5. Step 5: Solve for x
    x = 26,477,798,400/109,453.50
  6. Step 6: Final answer
    x = 241,909.11

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.