Home / 120,826.60-181,434.30-91,277.80

Finding the Fourth Proportional to 120,826.60, 181,434.30 and 91,277.80

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Solution

The fourth proportional to 120,826.60, 181,434.30 and 91,277.80 is: 137,063.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,826.60 : 181,434.30 = 91,277.80 : x
  2. Step 2: Convert to fraction form
    120,826.60/181,434.30 = 91,277.80/x
  3. Step 3: Cross multiply
    120,826.60x = 181,434.30 × 91,277.80
  4. Step 4: Simplify right side
    120,826.60x = 16,560,923,748.54
  5. Step 5: Solve for x
    x = 16,560,923,748.54/120,826.60
  6. Step 6: Final answer
    x = 137,063.56

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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.