Home / 81,106.94-120,910.69-79,828.76

Finding the Fourth Proportional to 81,106.94, 120,910.69 and 79,828.76

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Solution

The fourth proportional to 81,106.94, 120,910.69 and 79,828.76 is: 119,005.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,106.94 : 120,910.69 = 79,828.76 : x
  2. Step 2: Convert to fraction form
    81,106.94/120,910.69 = 79,828.76/x
  3. Step 3: Cross multiply
    81,106.94x = 120,910.69 × 79,828.76
  4. Step 4: Simplify right side
    81,106.94x = 9,652,150,453.44
  5. Step 5: Solve for x
    x = 9,652,150,453.44/81,106.94
  6. Step 6: Final answer
    x = 119,005.23

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.