Home / 100,049.06-138,071.22-54,724.34

Finding the Fourth Proportional to 100,049.06, 138,071.22 and 54,724.34

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Solution

The fourth proportional to 100,049.06, 138,071.22 and 54,724.34 is: 75,521.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,049.06 : 138,071.22 = 54,724.34 : x
  2. Step 2: Convert to fraction form
    100,049.06/138,071.22 = 54,724.34/x
  3. Step 3: Cross multiply
    100,049.06x = 138,071.22 × 54,724.34
  4. Step 4: Simplify right side
    100,049.06x = 7,555,856,387.49
  5. Step 5: Solve for x
    x = 7,555,856,387.49/100,049.06
  6. Step 6: Final answer
    x = 75,521.51

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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.