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Finding the Fourth Proportional to 135,453.71, 186,917.90 and 75,020.73

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Solution

The fourth proportional to 135,453.71, 186,917.90 and 75,020.73 is: 103,524.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,453.71 : 186,917.90 = 75,020.73 : x
  2. Step 2: Convert to fraction form
    135,453.71/186,917.90 = 75,020.73/x
  3. Step 3: Cross multiply
    135,453.71x = 186,917.90 × 75,020.73
  4. Step 4: Simplify right side
    135,453.71x = 14,022,716,932.96
  5. Step 5: Solve for x
    x = 14,022,716,932.96/135,453.71
  6. Step 6: Final answer
    x = 103,524.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.