Home / 189,780.52-261,923.16-109,206.40

Finding the Fourth Proportional to 189,780.52, 261,923.16 and 109,206.40

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Solution

The fourth proportional to 189,780.52, 261,923.16 and 109,206.40 is: 150,719.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,780.52 : 261,923.16 = 109,206.40 : x
  2. Step 2: Convert to fraction form
    189,780.52/261,923.16 = 109,206.40/x
  3. Step 3: Cross multiply
    189,780.52x = 261,923.16 × 109,206.40
  4. Step 4: Simplify right side
    189,780.52x = 28,603,685,380.22
  5. Step 5: Solve for x
    x = 28,603,685,380.22/189,780.52
  6. Step 6: Final answer
    x = 150,719.82

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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.