Home / 143,082.11-197,453.16-79,419.76

Finding the Fourth Proportional to 143,082.11, 197,453.16 and 79,419.76

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Solution

The fourth proportional to 143,082.11, 197,453.16 and 79,419.76 is: 109,599.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,082.11 : 197,453.16 = 79,419.76 : x
  2. Step 2: Convert to fraction form
    143,082.11/197,453.16 = 79,419.76/x
  3. Step 3: Cross multiply
    143,082.11x = 197,453.16 × 79,419.76
  4. Step 4: Simplify right side
    143,082.11x = 15,681,682,084.81
  5. Step 5: Solve for x
    x = 15,681,682,084.81/143,082.11
  6. Step 6: Final answer
    x = 109,599.18

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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.