Home / 138,986.57-191,801.97-75,324.21

Finding the Fourth Proportional to 138,986.57, 191,801.97 and 75,324.21

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Solution

The fourth proportional to 138,986.57, 191,801.97 and 75,324.21 is: 103,947.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,986.57 : 191,801.97 = 75,324.21 : x
  2. Step 2: Convert to fraction form
    138,986.57/191,801.97 = 75,324.21/x
  3. Step 3: Cross multiply
    138,986.57x = 191,801.97 × 75,324.21
  4. Step 4: Simplify right side
    138,986.57x = 14,447,331,866.69
  5. Step 5: Solve for x
    x = 14,447,331,866.69/138,986.57
  6. Step 6: Final answer
    x = 103,947.69

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1.5x scale

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.