Home / 189,400.12-261,386.94-108,855.76

Finding the Fourth Proportional to 189,400.12, 261,386.94 and 108,855.76

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Solution

The fourth proportional to 189,400.12, 261,386.94 and 108,855.76 is: 150,229.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,400.12 : 261,386.94 = 108,855.76 : x
  2. Step 2: Convert to fraction form
    189,400.12/261,386.94 = 108,855.76/x
  3. Step 3: Cross multiply
    189,400.12x = 261,386.94 × 108,855.76
  4. Step 4: Simplify right side
    189,400.12x = 28,453,474,007.77
  5. Step 5: Solve for x
    x = 28,453,474,007.77/189,400.12
  6. Step 6: Final answer
    x = 150,229.44

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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.