Home / 138,131.94-207,201.78-38,299.51

Finding the Fourth Proportional to 138,131.94, 207,201.78 and 38,299.51

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Solution

The fourth proportional to 138,131.94, 207,201.78 and 38,299.51 is: 57,450.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,131.94 : 207,201.78 = 38,299.51 : x
  2. Step 2: Convert to fraction form
    138,131.94/207,201.78 = 38,299.51/x
  3. Step 3: Cross multiply
    138,131.94x = 207,201.78 × 38,299.51
  4. Step 4: Simplify right side
    138,131.94x = 7,935,726,645.13
  5. Step 5: Solve for x
    x = 7,935,726,645.13/138,131.94
  6. Step 6: Final answer
    x = 57,450.34

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1.5x scale

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.