Home / 143,687.74-198,295.20-80,025.53

Finding the Fourth Proportional to 143,687.74, 198,295.20 and 80,025.53

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Solution

The fourth proportional to 143,687.74, 198,295.20 and 80,025.53 is: 110,438.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,687.74 : 198,295.20 = 80,025.53 : x
  2. Step 2: Convert to fraction form
    143,687.74/198,295.20 = 80,025.53/x
  3. Step 3: Cross multiply
    143,687.74x = 198,295.20 × 80,025.53
  4. Step 4: Simplify right side
    143,687.74x = 15,868,678,476.46
  5. Step 5: Solve for x
    x = 15,868,678,476.46/143,687.74
  6. Step 6: Final answer
    x = 110,438.64

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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.