Home / 143,998.45-198,716.14-79,468.18

Finding the Fourth Proportional to 143,998.45, 198,716.14 and 79,468.18

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Solution

The fourth proportional to 143,998.45, 198,716.14 and 79,468.18 is: 109,665.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,998.45 : 198,716.14 = 79,468.18 : x
  2. Step 2: Convert to fraction form
    143,998.45/198,716.14 = 79,468.18/x
  3. Step 3: Cross multiply
    143,998.45x = 198,716.14 × 79,468.18
  4. Step 4: Simplify right side
    143,998.45x = 15,791,609,982.43
  5. Step 5: Solve for x
    x = 15,791,609,982.43/143,998.45
  6. Step 6: Final answer
    x = 109,665.14

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1.5x scale

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.