Home / 142,013.10-195,976.97-77,481.39

Finding the Fourth Proportional to 142,013.10, 195,976.97 and 77,481.39

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Solution

The fourth proportional to 142,013.10, 195,976.97 and 77,481.39 is: 106,923.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,013.10 : 195,976.97 = 77,481.39 : x
  2. Step 2: Convert to fraction form
    142,013.10/195,976.97 = 77,481.39/x
  3. Step 3: Cross multiply
    142,013.10x = 195,976.97 × 77,481.39
  4. Step 4: Simplify right side
    142,013.10x = 15,184,568,681.65
  5. Step 5: Solve for x
    x = 15,184,568,681.65/142,013.10
  6. Step 6: Final answer
    x = 106,923.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.