Home / 143,769.85-198,403.18-83,376.30

Finding the Fourth Proportional to 143,769.85, 198,403.18 and 83,376.30

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Solution

The fourth proportional to 143,769.85, 198,403.18 and 83,376.30 is: 115,059.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,769.85 : 198,403.18 = 83,376.30 : x
  2. Step 2: Convert to fraction form
    143,769.85/198,403.18 = 83,376.30/x
  3. Step 3: Cross multiply
    143,769.85x = 198,403.18 × 83,376.30
  4. Step 4: Simplify right side
    143,769.85x = 16,542,123,056.63
  5. Step 5: Solve for x
    x = 16,542,123,056.63/143,769.85
  6. Step 6: Final answer
    x = 115,059.75

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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.