Home / 193,780.80-290,671.20-137,793.60

Finding the Fourth Proportional to 193,780.80, 290,671.20 and 137,793.60

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Solution

The fourth proportional to 193,780.80, 290,671.20 and 137,793.60 is: 206,690.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,780.80 : 290,671.20 = 137,793.60 : x
  2. Step 2: Convert to fraction form
    193,780.80/290,671.20 = 137,793.60/x
  3. Step 3: Cross multiply
    193,780.80x = 290,671.20 × 137,793.60
  4. Step 4: Simplify right side
    193,780.80x = 40,052,631,064.32
  5. Step 5: Solve for x
    x = 40,052,631,064.32/193,780.80
  6. Step 6: Final answer
    x = 206,690.40

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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.