Home / 143,817.15-198,474.47-80,155.41

Finding the Fourth Proportional to 143,817.15, 198,474.47 and 80,155.41

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Solution

The fourth proportional to 143,817.15, 198,474.47 and 80,155.41 is: 110,618.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,817.15 : 198,474.47 = 80,155.41 : x
  2. Step 2: Convert to fraction form
    143,817.15/198,474.47 = 80,155.41/x
  3. Step 3: Cross multiply
    143,817.15x = 198,474.47 × 80,155.41
  4. Step 4: Simplify right side
    143,817.15x = 15,908,801,672.91
  5. Step 5: Solve for x
    x = 15,908,801,672.91/143,817.15
  6. Step 6: Final answer
    x = 110,618.25

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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.