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Finding the Fourth Proportional to 143,797.87, 198,432.34 and 79,264.28

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Solution

The fourth proportional to 143,797.87, 198,432.34 and 79,264.28 is: 109,379.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,797.87 : 198,432.34 = 79,264.28 : x
  2. Step 2: Convert to fraction form
    143,797.87/198,432.34 = 79,264.28/x
  3. Step 3: Cross multiply
    143,797.87x = 198,432.34 × 79,264.28
  4. Step 4: Simplify right side
    143,797.87x = 15,728,596,162.49
  5. Step 5: Solve for x
    x = 15,728,596,162.49/143,797.87
  6. Step 6: Final answer
    x = 109,379.90

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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.