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Finding the Fourth Proportional to 119,863.60, 179,795.52 and 40,978.48

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Solution

The fourth proportional to 119,863.60, 179,795.52 and 40,978.48 is: 61,467.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,863.60 : 179,795.52 = 40,978.48 : x
  2. Step 2: Convert to fraction form
    119,863.60/179,795.52 = 40,978.48/x
  3. Step 3: Cross multiply
    119,863.60x = 179,795.52 × 40,978.48
  4. Step 4: Simplify right side
    119,863.60x = 7,367,747,120.41
  5. Step 5: Solve for x
    x = 7,367,747,120.41/119,863.60
  6. Step 6: Final answer
    x = 61,467.76

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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.