Home / 189,653.14-261,728.85-109,080.57

Finding the Fourth Proportional to 189,653.14, 261,728.85 and 109,080.57

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Solution

The fourth proportional to 189,653.14, 261,728.85 and 109,080.57 is: 150,535.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,653.14 : 261,728.85 = 109,080.57 : x
  2. Step 2: Convert to fraction form
    189,653.14/261,728.85 = 109,080.57/x
  3. Step 3: Cross multiply
    189,653.14x = 261,728.85 × 109,080.57
  4. Step 4: Simplify right side
    189,653.14x = 28,549,532,143.44
  5. Step 5: Solve for x
    x = 28,549,532,143.44/189,653.14
  6. Step 6: Final answer
    x = 150,535.51

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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.