Home / 189,079.38-260,979.90-111,623.13

Finding the Fourth Proportional to 189,079.38, 260,979.90 and 111,623.13

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Solution

The fourth proportional to 189,079.38, 260,979.90 and 111,623.13 is: 154,069.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,079.38 : 260,979.90 = 111,623.13 : x
  2. Step 2: Convert to fraction form
    189,079.38/260,979.90 = 111,623.13/x
  3. Step 3: Cross multiply
    189,079.38x = 260,979.90 × 111,623.13
  4. Step 4: Simplify right side
    189,079.38x = 29,131,393,305.09
  5. Step 5: Solve for x
    x = 29,131,393,305.09/189,079.38
  6. Step 6: Final answer
    x = 154,069.65

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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.