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Finding the Fourth Proportional to 143,825.99, 198,480.78 and 80,167.82

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Solution

The fourth proportional to 143,825.99, 198,480.78 and 80,167.82 is: 110,632.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,825.99 : 198,480.78 = 80,167.82 : x
  2. Step 2: Convert to fraction form
    143,825.99/198,480.78 = 80,167.82/x
  3. Step 3: Cross multiply
    143,825.99x = 198,480.78 × 80,167.82
  4. Step 4: Simplify right side
    143,825.99x = 15,911,771,444.50
  5. Step 5: Solve for x
    x = 15,911,771,444.50/143,825.99
  6. Step 6: Final answer
    x = 110,632.10

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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.