Home / 143,920.88-198,611.68-80,262.70

Finding the Fourth Proportional to 143,920.88, 198,611.68 and 80,262.70

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Solution

The fourth proportional to 143,920.88, 198,611.68 and 80,262.70 is: 110,763.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,920.88 : 198,611.68 = 80,262.70 : x
  2. Step 2: Convert to fraction form
    143,920.88/198,611.68 = 80,262.70/x
  3. Step 3: Cross multiply
    143,920.88x = 198,611.68 × 80,262.70
  4. Step 4: Simplify right side
    143,920.88x = 15,941,109,688.34
  5. Step 5: Solve for x
    x = 15,941,109,688.34/143,920.88
  6. Step 6: Final answer
    x = 110,763.01

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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.