Home / 143,351.15-197,829.66-78,825.29

Finding the Fourth Proportional to 143,351.15, 197,829.66 and 78,825.29

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Solution

The fourth proportional to 143,351.15, 197,829.66 and 78,825.29 is: 108,781.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,351.15 : 197,829.66 = 78,825.29 : x
  2. Step 2: Convert to fraction form
    143,351.15/197,829.66 = 78,825.29/x
  3. Step 3: Cross multiply
    143,351.15x = 197,829.66 × 78,825.29
  4. Step 4: Simplify right side
    143,351.15x = 15,593,979,997.48
  5. Step 5: Solve for x
    x = 15,593,979,997.48/143,351.15
  6. Step 6: Final answer
    x = 108,781.69

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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.