Home / 189,872.19-262,238.72-129,337.65

Finding the Fourth Proportional to 189,872.19, 262,238.72 and 129,337.65

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Solution

The fourth proportional to 189,872.19, 262,238.72 and 129,337.65 is: 178,632.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,872.19 : 262,238.72 = 129,337.65 : x
  2. Step 2: Convert to fraction form
    189,872.19/262,238.72 = 129,337.65/x
  3. Step 3: Cross multiply
    189,872.19x = 262,238.72 × 129,337.65
  4. Step 4: Simplify right side
    189,872.19x = 33,917,339,137.12
  5. Step 5: Solve for x
    x = 33,917,339,137.12/189,872.19
  6. Step 6: Final answer
    x = 178,632.47

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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.