Home / 143,972.20-198,680.28-79,442.02

Finding the Fourth Proportional to 143,972.20, 198,680.28 and 79,442.02

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Solution

The fourth proportional to 143,972.20, 198,680.28 and 79,442.02 is: 109,629.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,972.20 : 198,680.28 = 79,442.02 : x
  2. Step 2: Convert to fraction form
    143,972.20/198,680.28 = 79,442.02/x
  3. Step 3: Cross multiply
    143,972.20x = 198,680.28 × 79,442.02
  4. Step 4: Simplify right side
    143,972.20x = 15,783,562,777.37
  5. Step 5: Solve for x
    x = 15,783,562,777.37/143,972.20
  6. Step 6: Final answer
    x = 109,629.24

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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.