Home / 143,001.36-197,341.33-78,471.68

Finding the Fourth Proportional to 143,001.36, 197,341.33 and 78,471.68

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Solution

The fourth proportional to 143,001.36, 197,341.33 and 78,471.68 is: 108,290.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,001.36 : 197,341.33 = 78,471.68 : x
  2. Step 2: Convert to fraction form
    143,001.36/197,341.33 = 78,471.68/x
  3. Step 3: Cross multiply
    143,001.36x = 197,341.33 × 78,471.68
  4. Step 4: Simplify right side
    143,001.36x = 15,485,704,515.65
  5. Step 5: Solve for x
    x = 15,485,704,515.65/143,001.36
  6. Step 6: Final answer
    x = 108,290.61

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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.