Home / 138,940.73-191,738.22-75,278.52

Finding the Fourth Proportional to 138,940.73, 191,738.22 and 75,278.52

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Solution

The fourth proportional to 138,940.73, 191,738.22 and 75,278.52 is: 103,884.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,940.73 : 191,738.22 = 75,278.52 : x
  2. Step 2: Convert to fraction form
    138,940.73/191,738.22 = 75,278.52/x
  3. Step 3: Cross multiply
    138,940.73x = 191,738.22 × 75,278.52
  4. Step 4: Simplify right side
    138,940.73x = 14,433,769,429.03
  5. Step 5: Solve for x
    x = 14,433,769,429.03/138,940.73
  6. Step 6: Final answer
    x = 103,884.37

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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.