Home / 89,212.46-122,804.17-77,107.42

Finding the Fourth Proportional to 89,212.46, 122,804.17 and 77,107.42

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Solution

The fourth proportional to 89,212.46, 122,804.17 and 77,107.42 is: 106,141.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,212.46 : 122,804.17 = 77,107.42 : x
  2. Step 2: Convert to fraction form
    89,212.46/122,804.17 = 77,107.42/x
  3. Step 3: Cross multiply
    89,212.46x = 122,804.17 × 77,107.42
  4. Step 4: Simplify right side
    89,212.46x = 9,469,112,713.94
  5. Step 5: Solve for x
    x = 9,469,112,713.94/89,212.46
  6. Step 6: Final answer
    x = 106,141.15

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1.5x scale

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.