Home / 143,890.28-198,588.12-82,660.40

Finding the Fourth Proportional to 143,890.28, 198,588.12 and 82,660.40

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Solution

The fourth proportional to 143,890.28, 198,588.12 and 82,660.40 is: 114,082.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,890.28 : 198,588.12 = 82,660.40 : x
  2. Step 2: Convert to fraction form
    143,890.28/198,588.12 = 82,660.40/x
  3. Step 3: Cross multiply
    143,890.28x = 198,588.12 × 82,660.40
  4. Step 4: Simplify right side
    143,890.28x = 16,415,373,434.45
  5. Step 5: Solve for x
    x = 16,415,373,434.45/143,890.28
  6. Step 6: Final answer
    x = 114,082.57

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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.