Home / 140,879.80-194,434.05-87,182.13

Finding the Fourth Proportional to 140,879.80, 194,434.05 and 87,182.13

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Solution

The fourth proportional to 140,879.80, 194,434.05 and 87,182.13 is: 120,323.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,879.80 : 194,434.05 = 87,182.13 : x
  2. Step 2: Convert to fraction form
    140,879.80/194,434.05 = 87,182.13/x
  3. Step 3: Cross multiply
    140,879.80x = 194,434.05 × 87,182.13
  4. Step 4: Simplify right side
    140,879.80x = 16,951,173,651.36
  5. Step 5: Solve for x
    x = 16,951,173,651.36/140,879.80
  6. Step 6: Final answer
    x = 120,323.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.