Home / 143,339.96-197,791.98-78,798.56

Finding the Fourth Proportional to 143,339.96, 197,791.98 and 78,798.56

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Solution

The fourth proportional to 143,339.96, 197,791.98 and 78,798.56 is: 108,732.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,339.96 : 197,791.98 = 78,798.56 : x
  2. Step 2: Convert to fraction form
    143,339.96/197,791.98 = 78,798.56/x
  3. Step 3: Cross multiply
    143,339.96x = 197,791.98 × 78,798.56
  4. Step 4: Simplify right side
    143,339.96x = 15,585,721,919.09
  5. Step 5: Solve for x
    x = 15,585,721,919.09/143,339.96
  6. Step 6: Final answer
    x = 108,732.57

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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.