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Finding the Third Proportional to 121,280.50 and 180,735.50

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Solution

The third proportional to 121,280.50 and 180,735.50 is: 269,336.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,280.50 : 180,735.50 = 180,735.50 : x
  2. Step 2: Convert to fraction form
    121,280.50/180,735.50 = 180,735.50/x
  3. Step 3: Cross multiply
    121,280.50x = 180,735.50 × 180,735.50
  4. Step 4: Simplify right side
    121,280.50x = 32,665,320,960.25
  5. Step 5: Solve for x
    x = 32,665,320,960.25/121,280.50
  6. Step 6: Final answer
    x = 269,336.96

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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.