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Finding the Third Proportional to 69,251.20 and 99,020.60

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Solution

The third proportional to 69,251.20 and 99,020.60 is: 141,587.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,251.20 : 99,020.60 = 99,020.60 : x
  2. Step 2: Convert to fraction form
    69,251.20/99,020.60 = 99,020.60/x
  3. Step 3: Cross multiply
    69,251.20x = 99,020.60 × 99,020.60
  4. Step 4: Simplify right side
    69,251.20x = 9,805,079,533.80
  5. Step 5: Solve for x
    x = 9,805,079,533.80/69,251.20
  6. Step 6: Final answer
    x = 141,587.14

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.