Home / 138,625.80-191,215.51-90,882.24

Finding the Fourth Proportional to 138,625.80, 191,215.51 and 90,882.24

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Solution

The fourth proportional to 138,625.80, 191,215.51 and 90,882.24 is: 125,359.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,625.80 : 191,215.51 = 90,882.24 : x
  2. Step 2: Convert to fraction form
    138,625.80/191,215.51 = 90,882.24/x
  3. Step 3: Cross multiply
    138,625.80x = 191,215.51 × 90,882.24
  4. Step 4: Simplify right side
    138,625.80x = 17,378,093,871.54
  5. Step 5: Solve for x
    x = 17,378,093,871.54/138,625.80
  6. Step 6: Final answer
    x = 125,359.74

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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.