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Finding the Fourth Proportional to 143,679.96, 198,278.26 and 83,285.60

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Solution

The fourth proportional to 143,679.96, 198,278.26 and 83,285.60 is: 114,934.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,679.96 : 198,278.26 = 83,285.60 : x
  2. Step 2: Convert to fraction form
    143,679.96/198,278.26 = 83,285.60/x
  3. Step 3: Cross multiply
    143,679.96x = 198,278.26 × 83,285.60
  4. Step 4: Simplify right side
    143,679.96x = 16,513,722,651.45
  5. Step 5: Solve for x
    x = 16,513,722,651.45/143,679.96
  6. Step 6: Final answer
    x = 114,934.07

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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.