Home / 105,974.58-158,986.49-31,091.70

Finding the Fourth Proportional to 105,974.58, 158,986.49 and 31,091.70

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Solution

The fourth proportional to 105,974.58, 158,986.49 and 31,091.70 is: 46,644.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,974.58 : 158,986.49 = 31,091.70 : x
  2. Step 2: Convert to fraction form
    105,974.58/158,986.49 = 31,091.70/x
  3. Step 3: Cross multiply
    105,974.58x = 158,986.49 × 31,091.70
  4. Step 4: Simplify right side
    105,974.58x = 4,943,160,251.13
  5. Step 5: Solve for x
    x = 4,943,160,251.13/105,974.58
  6. Step 6: Final answer
    x = 46,644.77

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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.