Home / 189,660.45-261,731.19-109,085.88

Finding the Fourth Proportional to 189,660.45, 261,731.19 and 109,085.88

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Solution

The fourth proportional to 189,660.45, 261,731.19 and 109,085.88 is: 150,538.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,660.45 : 261,731.19 = 109,085.88 : x
  2. Step 2: Convert to fraction form
    189,660.45/261,731.19 = 109,085.88/x
  3. Step 3: Cross multiply
    189,660.45x = 261,731.19 × 109,085.88
  4. Step 4: Simplify right side
    189,660.45x = 28,551,177,184.60
  5. Step 5: Solve for x
    x = 28,551,177,184.60/189,660.45
  6. Step 6: Final answer
    x = 150,538.38

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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.