Home / 142,709.20-196,938.21-82,279.51

Finding the Fourth Proportional to 142,709.20, 196,938.21 and 82,279.51

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Solution

The fourth proportional to 142,709.20, 196,938.21 and 82,279.51 is: 113,545.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,709.20 : 196,938.21 = 82,279.51 : x
  2. Step 2: Convert to fraction form
    142,709.20/196,938.21 = 82,279.51/x
  3. Step 3: Cross multiply
    142,709.20x = 196,938.21 × 82,279.51
  4. Step 4: Simplify right side
    142,709.20x = 16,203,979,419.08
  5. Step 5: Solve for x
    x = 16,203,979,419.08/142,709.20
  6. Step 6: Final answer
    x = 113,545.44

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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.