Home / 143,939.18-198,636.41-80,281.07

Finding the Fourth Proportional to 143,939.18, 198,636.41 and 80,281.07

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Solution

The fourth proportional to 143,939.18, 198,636.41 and 80,281.07 is: 110,788.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,939.18 : 198,636.41 = 80,281.07 : x
  2. Step 2: Convert to fraction form
    143,939.18/198,636.41 = 80,281.07/x
  3. Step 3: Cross multiply
    143,939.18x = 198,636.41 × 80,281.07
  4. Step 4: Simplify right side
    143,939.18x = 15,946,743,630.94
  5. Step 5: Solve for x
    x = 15,946,743,630.94/143,939.18
  6. Step 6: Final answer
    x = 110,788.07

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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.