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Finding the Third Proportional to 74,921.25 and 105,390.75

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Solution

The third proportional to 74,921.25 and 105,390.75 is: 148,251.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,921.25 : 105,390.75 = 105,390.75 : x
  2. Step 2: Convert to fraction form
    74,921.25/105,390.75 = 105,390.75/x
  3. Step 3: Cross multiply
    74,921.25x = 105,390.75 × 105,390.75
  4. Step 4: Simplify right side
    74,921.25x = 11,107,210,185.56
  5. Step 5: Solve for x
    x = 11,107,210,185.56/74,921.25
  6. Step 6: Final answer
    x = 148,251.80

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.