Home / 143,023.34-197,372.20-79,371.38

Finding the Fourth Proportional to 143,023.34, 197,372.20 and 79,371.38

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Solution

The fourth proportional to 143,023.34, 197,372.20 and 79,371.38 is: 109,532.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,023.34 : 197,372.20 = 79,371.38 : x
  2. Step 2: Convert to fraction form
    143,023.34/197,372.20 = 79,371.38/x
  3. Step 3: Cross multiply
    143,023.34x = 197,372.20 × 79,371.38
  4. Step 4: Simplify right side
    143,023.34x = 15,665,703,887.64
  5. Step 5: Solve for x
    x = 15,665,703,887.64/143,023.34
  6. Step 6: Final answer
    x = 109,532.50

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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.