Home / 143,539.92-198,083.52-79,007.76

Finding the Fourth Proportional to 143,539.92, 198,083.52 and 79,007.76

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Solution

The fourth proportional to 143,539.92, 198,083.52 and 79,007.76 is: 109,029.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,539.92 : 198,083.52 = 79,007.76 : x
  2. Step 2: Convert to fraction form
    143,539.92/198,083.52 = 79,007.76/x
  3. Step 3: Cross multiply
    143,539.92x = 198,083.52 × 79,007.76
  4. Step 4: Simplify right side
    143,539.92x = 15,650,135,208.12
  5. Step 5: Solve for x
    x = 15,650,135,208.12/143,539.92
  6. Step 6: Final answer
    x = 109,029.84

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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.