Home / 189,905.20-284,956.84-137,745.26

Finding the Fourth Proportional to 189,905.20, 284,956.84 and 137,745.26

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Solution

The fourth proportional to 189,905.20, 284,956.84 and 137,745.26 is: 206,689.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,905.20 : 284,956.84 = 137,745.26 : x
  2. Step 2: Convert to fraction form
    189,905.20/284,956.84 = 137,745.26/x
  3. Step 3: Cross multiply
    189,905.20x = 284,956.84 × 137,745.26
  4. Step 4: Simplify right side
    189,905.20x = 39,251,454,014.58
  5. Step 5: Solve for x
    x = 39,251,454,014.58/189,905.20
  6. Step 6: Final answer
    x = 206,689.73

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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.