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Finding the Third Proportional to 66,600.75 and 139,356.75

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Solution

The third proportional to 66,600.75 and 139,356.75 is: 291,592.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,600.75 : 139,356.75 = 139,356.75 : x
  2. Step 2: Convert to fraction form
    66,600.75/139,356.75 = 139,356.75/x
  3. Step 3: Cross multiply
    66,600.75x = 139,356.75 × 139,356.75
  4. Step 4: Simplify right side
    66,600.75x = 19,420,303,770.56
  5. Step 5: Solve for x
    x = 19,420,303,770.56/66,600.75
  6. Step 6: Final answer
    x = 291,592.87

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.