Home / 127,811.15-191,504.82-77,739.77

Finding the Fourth Proportional to 127,811.15, 191,504.82 and 77,739.77

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Solution

The fourth proportional to 127,811.15, 191,504.82 and 77,739.77 is: 116,480.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,811.15 : 191,504.82 = 77,739.77 : x
  2. Step 2: Convert to fraction form
    127,811.15/191,504.82 = 77,739.77/x
  3. Step 3: Cross multiply
    127,811.15x = 191,504.82 × 77,739.77
  4. Step 4: Simplify right side
    127,811.15x = 14,887,540,660.69
  5. Step 5: Solve for x
    x = 14,887,540,660.69/127,811.15
  6. Step 6: Final answer
    x = 116,480.77

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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.