Home / 133,022.12-198,486.61-128,512.04

Finding the Fourth Proportional to 133,022.12, 198,486.61 and 128,512.04

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Solution

The fourth proportional to 133,022.12, 198,486.61 and 128,512.04 is: 191,756.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,022.12 : 198,486.61 = 128,512.04 : x
  2. Step 2: Convert to fraction form
    133,022.12/198,486.61 = 128,512.04/x
  3. Step 3: Cross multiply
    133,022.12x = 198,486.61 × 128,512.04
  4. Step 4: Simplify right side
    133,022.12x = 25,507,919,163.78
  5. Step 5: Solve for x
    x = 25,507,919,163.78/133,022.12
  6. Step 6: Final answer
    x = 191,756.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.