Home / 143,936.16-198,632.40-80,287.20

Finding the Fourth Proportional to 143,936.16, 198,632.40 and 80,287.20

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Solution

The fourth proportional to 143,936.16, 198,632.40 and 80,287.20 is: 110,796.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,936.16 : 198,632.40 = 80,287.20 : x
  2. Step 2: Convert to fraction form
    143,936.16/198,632.40 = 80,287.20/x
  3. Step 3: Cross multiply
    143,936.16x = 198,632.40 × 80,287.20
  4. Step 4: Simplify right side
    143,936.16x = 15,947,639,225.28
  5. Step 5: Solve for x
    x = 15,947,639,225.28/143,936.16
  6. Step 6: Final answer
    x = 110,796.61

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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.