Home / 128,268.62-192,453.96-49,361.66

Finding the Fourth Proportional to 128,268.62, 192,453.96 and 49,361.66

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Solution

The fourth proportional to 128,268.62, 192,453.96 and 49,361.66 is: 74,062.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,268.62 : 192,453.96 = 49,361.66 : x
  2. Step 2: Convert to fraction form
    128,268.62/192,453.96 = 49,361.66/x
  3. Step 3: Cross multiply
    128,268.62x = 192,453.96 × 49,361.66
  4. Step 4: Simplify right side
    128,268.62x = 9,499,846,939.17
  5. Step 5: Solve for x
    x = 9,499,846,939.17/128,268.62
  6. Step 6: Final answer
    x = 74,062.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.