Home / 143,947.66-198,648.12-80,289.58

Finding the Fourth Proportional to 143,947.66, 198,648.12 and 80,289.58

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Solution

The fourth proportional to 143,947.66, 198,648.12 and 80,289.58 is: 110,799.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,947.66 : 198,648.12 = 80,289.58 : x
  2. Step 2: Convert to fraction form
    143,947.66/198,648.12 = 80,289.58/x
  3. Step 3: Cross multiply
    143,947.66x = 198,648.12 × 80,289.58
  4. Step 4: Simplify right side
    143,947.66x = 15,949,374,122.59
  5. Step 5: Solve for x
    x = 15,949,374,122.59/143,947.66
  6. Step 6: Final answer
    x = 110,799.82

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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.