Home / 190,979.16-263,452.38-129,728.49

Finding the Fourth Proportional to 190,979.16, 263,452.38 and 129,728.49

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Solution

The fourth proportional to 190,979.16, 263,452.38 and 129,728.49 is: 178,958.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,979.16 : 263,452.38 = 129,728.49 : x
  2. Step 2: Convert to fraction form
    190,979.16/263,452.38 = 129,728.49/x
  3. Step 3: Cross multiply
    190,979.16x = 263,452.38 × 129,728.49
  4. Step 4: Simplify right side
    190,979.16x = 34,177,279,444.31
  5. Step 5: Solve for x
    x = 34,177,279,444.31/190,979.16
  6. Step 6: Final answer
    x = 178,958.16

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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.