Home / 151,939.20-228,054.60-77,143.80

Finding the Fourth Proportional to 151,939.20, 228,054.60 and 77,143.80

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Solution

The fourth proportional to 151,939.20, 228,054.60 and 77,143.80 is: 115,789.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,939.20 : 228,054.60 = 77,143.80 : x
  2. Step 2: Convert to fraction form
    151,939.20/228,054.60 = 77,143.80/x
  3. Step 3: Cross multiply
    151,939.20x = 228,054.60 × 77,143.80
  4. Step 4: Simplify right side
    151,939.20x = 17,592,998,451.48
  5. Step 5: Solve for x
    x = 17,592,998,451.48/151,939.20
  6. Step 6: Final answer
    x = 115,789.73

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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.