Home / 142,218.92-196,260.12-77,687.39

Finding the Fourth Proportional to 142,218.92, 196,260.12 and 77,687.39

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Solution

The fourth proportional to 142,218.92, 196,260.12 and 77,687.39 is: 107,207.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,218.92 : 196,260.12 = 77,687.39 : x
  2. Step 2: Convert to fraction form
    142,218.92/196,260.12 = 77,687.39/x
  3. Step 3: Cross multiply
    142,218.92x = 196,260.12 × 77,687.39
  4. Step 4: Simplify right side
    142,218.92x = 15,246,936,974.54
  5. Step 5: Solve for x
    x = 15,246,936,974.54/142,218.92
  6. Step 6: Final answer
    x = 107,207.51

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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.