Home / 143,350.39-197,828.62-78,824.54

Finding the Fourth Proportional to 143,350.39, 197,828.62 and 78,824.54

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Solution

The fourth proportional to 143,350.39, 197,828.62 and 78,824.54 is: 108,780.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,350.39 : 197,828.62 = 78,824.54 : x
  2. Step 2: Convert to fraction form
    143,350.39/197,828.62 = 78,824.54/x
  3. Step 3: Cross multiply
    143,350.39x = 197,828.62 × 78,824.54
  4. Step 4: Simplify right side
    143,350.39x = 15,593,750,267.85
  5. Step 5: Solve for x
    x = 15,593,750,267.85/143,350.39
  6. Step 6: Final answer
    x = 108,780.66

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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.