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Finding the Fourth Proportional to 119,920.40, 179,945.40 and 49,806.80

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Solution

The fourth proportional to 119,920.40, 179,945.40 and 49,806.80 is: 74,737.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,920.40 : 179,945.40 = 49,806.80 : x
  2. Step 2: Convert to fraction form
    119,920.40/179,945.40 = 49,806.80/x
  3. Step 3: Cross multiply
    119,920.40x = 179,945.40 × 49,806.80
  4. Step 4: Simplify right side
    119,920.40x = 8,962,504,548.72
  5. Step 5: Solve for x
    x = 8,962,504,548.72/119,920.40
  6. Step 6: Final answer
    x = 74,737.11

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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.