Home / 121,836.11-182,311.29-100,578.47

Finding the Fourth Proportional to 121,836.11, 182,311.29 and 100,578.47

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Solution

The fourth proportional to 121,836.11, 182,311.29 and 100,578.47 is: 150,502.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,836.11 : 182,311.29 = 100,578.47 : x
  2. Step 2: Convert to fraction form
    121,836.11/182,311.29 = 100,578.47/x
  3. Step 3: Cross multiply
    121,836.11x = 182,311.29 × 100,578.47
  4. Step 4: Simplify right side
    121,836.11x = 18,336,589,700.37
  5. Step 5: Solve for x
    x = 18,336,589,700.37/121,836.11
  6. Step 6: Final answer
    x = 150,502.10

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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.