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Finding the Third Proportional to 69,278 and 99,051

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Solution

The third proportional to 69,278 and 99,051 is: 141,619.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,278 : 99,051 = 99,051 : x
  2. Step 2: Convert to fraction form
    69,278/99,051 = 99,051/x
  3. Step 3: Cross multiply
    69,278x = 99,051 × 99,051
  4. Step 4: Simplify right side
    69,278x = 9,811,100,601
  5. Step 5: Solve for x
    x = 9,811,100,601/69,278
  6. Step 6: Final answer
    x = 141,619.28

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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.