Home / 143,350.92-197,807.04-78,809.54

Finding the Fourth Proportional to 143,350.92, 197,807.04 and 78,809.54

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Solution

The fourth proportional to 143,350.92, 197,807.04 and 78,809.54 is: 108,747.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,350.92 : 197,807.04 = 78,809.54 : x
  2. Step 2: Convert to fraction form
    143,350.92/197,807.04 = 78,809.54/x
  3. Step 3: Cross multiply
    143,350.92x = 197,807.04 × 78,809.54
  4. Step 4: Simplify right side
    143,350.92x = 15,589,080,842.13
  5. Step 5: Solve for x
    x = 15,589,080,842.13/143,350.92
  6. Step 6: Final answer
    x = 108,747.69

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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.