Home / 143,687.39-198,288.81-83,269.62

Finding the Fourth Proportional to 143,687.39, 198,288.81 and 83,269.62

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Solution

The fourth proportional to 143,687.39, 198,288.81 and 83,269.62 is: 114,912.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,687.39 : 198,288.81 = 83,269.62 : x
  2. Step 2: Convert to fraction form
    143,687.39/198,288.81 = 83,269.62/x
  3. Step 3: Cross multiply
    143,687.39x = 198,288.81 × 83,269.62
  4. Step 4: Simplify right side
    143,687.39x = 16,511,433,858.95
  5. Step 5: Solve for x
    x = 16,511,433,858.95/143,687.39
  6. Step 6: Final answer
    x = 114,912.20

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1.5x scale

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.