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Finding the Third Proportional to 66,519.50 and 142,880.50

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Solution

The third proportional to 66,519.50 and 142,880.50 is: 306,900.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,519.50 : 142,880.50 = 142,880.50 : x
  2. Step 2: Convert to fraction form
    66,519.50/142,880.50 = 142,880.50/x
  3. Step 3: Cross multiply
    66,519.50x = 142,880.50 × 142,880.50
  4. Step 4: Simplify right side
    66,519.50x = 20,414,837,280.25
  5. Step 5: Solve for x
    x = 20,414,837,280.25/66,519.50
  6. Step 6: Final answer
    x = 306,900.04

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.