Home / 198,515.82-273,840.90-121,981.74

Finding the Fourth Proportional to 198,515.82, 273,840.90 and 121,981.74

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Solution

The fourth proportional to 198,515.82, 273,840.90 and 121,981.74 is: 168,266.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,515.82 : 273,840.90 = 121,981.74 : x
  2. Step 2: Convert to fraction form
    198,515.82/273,840.90 = 121,981.74/x
  3. Step 3: Cross multiply
    198,515.82x = 273,840.90 × 121,981.74
  4. Step 4: Simplify right side
    198,515.82x = 33,403,589,465.17
  5. Step 5: Solve for x
    x = 33,403,589,465.17/198,515.82
  6. Step 6: Final answer
    x = 168,266.64

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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.