Home / 128,921.71-193,382.62-40,182.37

Finding the Fourth Proportional to 128,921.71, 193,382.62 and 40,182.37

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Solution

The fourth proportional to 128,921.71, 193,382.62 and 40,182.37 is: 60,273.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,921.71 : 193,382.62 = 40,182.37 : x
  2. Step 2: Convert to fraction form
    128,921.71/193,382.62 = 40,182.37/x
  3. Step 3: Cross multiply
    128,921.71x = 193,382.62 × 40,182.37
  4. Step 4: Simplify right side
    128,921.71x = 7,770,571,988.41
  5. Step 5: Solve for x
    x = 7,770,571,988.41/128,921.71
  6. Step 6: Final answer
    x = 60,273.57

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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.