Home / 198,406.26-273,768.63-121,900.74

Finding the Fourth Proportional to 198,406.26, 273,768.63 and 121,900.74

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Solution

The fourth proportional to 198,406.26, 273,768.63 and 121,900.74 is: 168,203.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,406.26 : 273,768.63 = 121,900.74 : x
  2. Step 2: Convert to fraction form
    198,406.26/273,768.63 = 121,900.74/x
  3. Step 3: Cross multiply
    198,406.26x = 273,768.63 × 121,900.74
  4. Step 4: Simplify right side
    198,406.26x = 33,372,598,585.79
  5. Step 5: Solve for x
    x = 33,372,598,585.79/198,406.26
  6. Step 6: Final answer
    x = 168,203.36

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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.