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Finding the Fourth Proportional to 143,673.99, 198,255.92 and 80,017.71

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Solution

The fourth proportional to 143,673.99, 198,255.92 and 80,017.71 is: 110,416.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,673.99 : 198,255.92 = 80,017.71 : x
  2. Step 2: Convert to fraction form
    143,673.99/198,255.92 = 80,017.71/x
  3. Step 3: Cross multiply
    143,673.99x = 198,255.92 × 80,017.71
  4. Step 4: Simplify right side
    143,673.99x = 15,863,984,312.25
  5. Step 5: Solve for x
    x = 15,863,984,312.25/143,673.99
  6. Step 6: Final answer
    x = 110,416.54

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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.