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Finding the Fourth Proportional to 119,879.40, 179,899.40 and 49,758.80

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Solution

The fourth proportional to 119,879.40, 179,899.40 and 49,758.80 is: 74,671.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,879.40 : 179,899.40 = 49,758.80 : x
  2. Step 2: Convert to fraction form
    119,879.40/179,899.40 = 49,758.80/x
  3. Step 3: Cross multiply
    119,879.40x = 179,899.40 × 49,758.80
  4. Step 4: Simplify right side
    119,879.40x = 8,951,578,264.72
  5. Step 5: Solve for x
    x = 8,951,578,264.72/119,879.40
  6. Step 6: Final answer
    x = 74,671.53

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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.