Home / 143,435.84-197,936.12-79,772.27

Finding the Fourth Proportional to 143,435.84, 197,936.12 and 79,772.27

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Solution

The fourth proportional to 143,435.84, 197,936.12 and 79,772.27 is: 110,082.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,435.84 : 197,936.12 = 79,772.27 : x
  2. Step 2: Convert to fraction form
    143,435.84/197,936.12 = 79,772.27/x
  3. Step 3: Cross multiply
    143,435.84x = 197,936.12 × 79,772.27
  4. Step 4: Simplify right side
    143,435.84x = 15,789,812,817.14
  5. Step 5: Solve for x
    x = 15,789,812,817.14/143,435.84
  6. Step 6: Final answer
    x = 110,082.76

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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.