Home / 143,087.11-197,450.33-79,419.90

Finding the Fourth Proportional to 143,087.11, 197,450.33 and 79,419.90

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Solution

The fourth proportional to 143,087.11, 197,450.33 and 79,419.90 is: 109,593.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,087.11 : 197,450.33 = 79,419.90 : x
  2. Step 2: Convert to fraction form
    143,087.11/197,450.33 = 79,419.90/x
  3. Step 3: Cross multiply
    143,087.11x = 197,450.33 × 79,419.90
  4. Step 4: Simplify right side
    143,087.11x = 15,681,485,463.57
  5. Step 5: Solve for x
    x = 15,681,485,463.57/143,087.11
  6. Step 6: Final answer
    x = 109,593.98

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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.