Home / 143,835.94-198,485.40-80,171.56

Finding the Fourth Proportional to 143,835.94, 198,485.40 and 80,171.56

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Solution

The fourth proportional to 143,835.94, 198,485.40 and 80,171.56 is: 110,632.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,835.94 : 198,485.40 = 80,171.56 : x
  2. Step 2: Convert to fraction form
    143,835.94/198,485.40 = 80,171.56/x
  3. Step 3: Cross multiply
    143,835.94x = 198,485.40 × 80,171.56
  4. Step 4: Simplify right side
    143,835.94x = 15,912,884,155.22
  5. Step 5: Solve for x
    x = 15,912,884,155.22/143,835.94
  6. Step 6: Final answer
    x = 110,632.18

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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.