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Finding the Third Proportional to 66,921.75 and 98,148.38

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Solution

The third proportional to 66,921.75 and 98,148.38 is: 143,945.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,921.75 : 98,148.38 = 98,148.38 : x
  2. Step 2: Convert to fraction form
    66,921.75/98,148.38 = 98,148.38/x
  3. Step 3: Cross multiply
    66,921.75x = 98,148.38 × 98,148.38
  4. Step 4: Simplify right side
    66,921.75x = 9,633,103,515.14
  5. Step 5: Solve for x
    x = 9,633,103,515.14/66,921.75
  6. Step 6: Final answer
    x = 143,945.78

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.