Home / 143,587.28-198,142.66-79,043.96

Finding the Fourth Proportional to 143,587.28, 198,142.66 and 79,043.96

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Solution

The fourth proportional to 143,587.28, 198,142.66 and 79,043.96 is: 109,076.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,587.28 : 198,142.66 = 79,043.96 : x
  2. Step 2: Convert to fraction form
    143,587.28/198,142.66 = 79,043.96/x
  3. Step 3: Cross multiply
    143,587.28x = 198,142.66 × 79,043.96
  4. Step 4: Simplify right side
    143,587.28x = 15,661,980,491.33
  5. Step 5: Solve for x
    x = 15,661,980,491.33/143,587.28
  6. Step 6: Final answer
    x = 109,076.38

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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.