Home / 105,979.73-158,821.97-79,653.78

Finding the Fourth Proportional to 105,979.73, 158,821.97 and 79,653.78

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Solution

The fourth proportional to 105,979.73, 158,821.97 and 79,653.78 is: 119,369.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,979.73 : 158,821.97 = 79,653.78 : x
  2. Step 2: Convert to fraction form
    105,979.73/158,821.97 = 79,653.78/x
  3. Step 3: Cross multiply
    105,979.73x = 158,821.97 × 79,653.78
  4. Step 4: Simplify right side
    105,979.73x = 12,650,769,859.28
  5. Step 5: Solve for x
    x = 12,650,769,859.28/105,979.73
  6. Step 6: Final answer
    x = 119,369.72

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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.