Home / 133,349.20-199,991.80-77,067.60

Finding the Fourth Proportional to 133,349.20, 199,991.80 and 77,067.60

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Solution

The fourth proportional to 133,349.20, 199,991.80 and 77,067.60 is: 115,582.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,349.20 : 199,991.80 = 77,067.60 : x
  2. Step 2: Convert to fraction form
    133,349.20/199,991.80 = 77,067.60/x
  3. Step 3: Cross multiply
    133,349.20x = 199,991.80 × 77,067.60
  4. Step 4: Simplify right side
    133,349.20x = 15,412,888,045.68
  5. Step 5: Solve for x
    x = 15,412,888,045.68/133,349.20
  6. Step 6: Final answer
    x = 115,582.91

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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.