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Finding the Fourth Proportional to 193,268.80, 289,672.80 and 80,948.80

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Solution

The fourth proportional to 193,268.80, 289,672.80 and 80,948.80 is: 121,326.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,268.80 : 289,672.80 = 80,948.80 : x
  2. Step 2: Convert to fraction form
    193,268.80/289,672.80 = 80,948.80/x
  3. Step 3: Cross multiply
    193,268.80x = 289,672.80 × 80,948.80
  4. Step 4: Simplify right side
    193,268.80x = 23,448,665,552.64
  5. Step 5: Solve for x
    x = 23,448,665,552.64/193,268.80
  6. Step 6: Final answer
    x = 121,326.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.