Home / 105,619.20-158,414.40-31,747.20

Finding the Fourth Proportional to 105,619.20, 158,414.40 and 31,747.20

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Solution

The fourth proportional to 105,619.20, 158,414.40 and 31,747.20 is: 47,616.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,619.20 : 158,414.40 = 31,747.20 : x
  2. Step 2: Convert to fraction form
    105,619.20/158,414.40 = 31,747.20/x
  3. Step 3: Cross multiply
    105,619.20x = 158,414.40 × 31,747.20
  4. Step 4: Simplify right side
    105,619.20x = 5,029,213,639.68
  5. Step 5: Solve for x
    x = 5,029,213,639.68/105,619.20
  6. Step 6: Final answer
    x = 47,616.47

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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.