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Finding the Fourth Proportional to 143,597.84, 198,163.34 and 79,065.73

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Solution

The fourth proportional to 143,597.84, 198,163.34 and 79,065.73 is: 109,109.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,597.84 : 198,163.34 = 79,065.73 : x
  2. Step 2: Convert to fraction form
    143,597.84/198,163.34 = 79,065.73/x
  3. Step 3: Cross multiply
    143,597.84x = 198,163.34 × 79,065.73
  4. Step 4: Simplify right side
    143,597.84x = 15,667,929,285.21
  5. Step 5: Solve for x
    x = 15,667,929,285.21/143,597.84
  6. Step 6: Final answer
    x = 109,109.79

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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.