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Finding the Fourth Proportional to 119,768.80, 179,638.80 and 49,640.80

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Solution

The fourth proportional to 119,768.80, 179,638.80 and 49,640.80 is: 74,455.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,768.80 : 179,638.80 = 49,640.80 : x
  2. Step 2: Convert to fraction form
    119,768.80/179,638.80 = 49,640.80/x
  3. Step 3: Cross multiply
    119,768.80x = 179,638.80 × 49,640.80
  4. Step 4: Simplify right side
    119,768.80x = 8,917,413,743.04
  5. Step 5: Solve for x
    x = 8,917,413,743.04/119,768.80
  6. Step 6: Final answer
    x = 74,455.23

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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.