Home / 127,550.20-191,325.30-76,811.80

Finding the Fourth Proportional to 127,550.20, 191,325.30 and 76,811.80

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Solution

The fourth proportional to 127,550.20, 191,325.30 and 76,811.80 is: 115,217.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,550.20 : 191,325.30 = 76,811.80 : x
  2. Step 2: Convert to fraction form
    127,550.20/191,325.30 = 76,811.80/x
  3. Step 3: Cross multiply
    127,550.20x = 191,325.30 × 76,811.80
  4. Step 4: Simplify right side
    127,550.20x = 14,696,040,678.54
  5. Step 5: Solve for x
    x = 14,696,040,678.54/127,550.20
  6. Step 6: Final answer
    x = 115,217.70

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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.