Home / 81,104.94-120,907.71-79,826.76

Finding the Fourth Proportional to 81,104.94, 120,907.71 and 79,826.76

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Solution

The fourth proportional to 81,104.94, 120,907.71 and 79,826.76 is: 119,002.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,104.94 : 120,907.71 = 79,826.76 : x
  2. Step 2: Convert to fraction form
    81,104.94/120,907.71 = 79,826.76/x
  3. Step 3: Cross multiply
    81,104.94x = 120,907.71 × 79,826.76
  4. Step 4: Simplify right side
    81,104.94x = 9,651,670,748.32
  5. Step 5: Solve for x
    x = 9,651,670,748.32/81,104.94
  6. Step 6: Final answer
    x = 119,002.25

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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.