Home / 100,324.28-138,357.83-66,367.46

Finding the Fourth Proportional to 100,324.28, 138,357.83 and 66,367.46

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Solution

The fourth proportional to 100,324.28, 138,357.83 and 66,367.46 is: 91,527.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,324.28 : 138,357.83 = 66,367.46 : x
  2. Step 2: Convert to fraction form
    100,324.28/138,357.83 = 66,367.46/x
  3. Step 3: Cross multiply
    100,324.28x = 138,357.83 × 66,367.46
  4. Step 4: Simplify right side
    100,324.28x = 9,182,456,724.59
  5. Step 5: Solve for x
    x = 9,182,456,724.59/100,324.28
  6. Step 6: Final answer
    x = 91,527.77

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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.