Home / 105,723.20-158,611.80-74,619.20

Finding the Fourth Proportional to 105,723.20, 158,611.80 and 74,619.20

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Solution

The fourth proportional to 105,723.20, 158,611.80 and 74,619.20 is: 111,947.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,723.20 : 158,611.80 = 74,619.20 : x
  2. Step 2: Convert to fraction form
    105,723.20/158,611.80 = 74,619.20/x
  3. Step 3: Cross multiply
    105,723.20x = 158,611.80 × 74,619.20
  4. Step 4: Simplify right side
    105,723.20x = 11,835,485,626.56
  5. Step 5: Solve for x
    x = 11,835,485,626.56/105,723.20
  6. Step 6: Final answer
    x = 111,947.86

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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.