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Finding the Fourth Proportional to 119,305.80, 178,947.90 and 40,422.60

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Solution

The fourth proportional to 119,305.80, 178,947.90 and 40,422.60 is: 60,630.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,305.80 : 178,947.90 = 40,422.60 : x
  2. Step 2: Convert to fraction form
    119,305.80/178,947.90 = 40,422.60/x
  3. Step 3: Cross multiply
    119,305.80x = 178,947.90 × 40,422.60
  4. Step 4: Simplify right side
    119,305.80x = 7,233,539,382.54
  5. Step 5: Solve for x
    x = 7,233,539,382.54/119,305.80
  6. Step 6: Final answer
    x = 60,630.24

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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.