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Finding the Third Proportional to 66,413.25 and 143,322

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Solution

The third proportional to 66,413.25 and 143,322 is: 309,293.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,413.25 : 143,322 = 143,322 : x
  2. Step 2: Convert to fraction form
    66,413.25/143,322 = 143,322/x
  3. Step 3: Cross multiply
    66,413.25x = 143,322 × 143,322
  4. Step 4: Simplify right side
    66,413.25x = 20,541,195,684
  5. Step 5: Solve for x
    x = 20,541,195,684/66,413.25
  6. Step 6: Final answer
    x = 309,293.64

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.