Home / 143,939.16-198,636.39-80,281.08

Finding the Fourth Proportional to 143,939.16, 198,636.39 and 80,281.08

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Solution

The fourth proportional to 143,939.16, 198,636.39 and 80,281.08 is: 110,788.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,939.16 : 198,636.39 = 80,281.08 : x
  2. Step 2: Convert to fraction form
    143,939.16/198,636.39 = 80,281.08/x
  3. Step 3: Cross multiply
    143,939.16x = 198,636.39 × 80,281.08
  4. Step 4: Simplify right side
    143,939.16x = 15,946,743,916.50
  5. Step 5: Solve for x
    x = 15,946,743,916.50/143,939.16
  6. Step 6: Final answer
    x = 110,788.09

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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.