Home / 142,183.92-196,238.99-81,749.82

Finding the Fourth Proportional to 142,183.92, 196,238.99 and 81,749.82

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Solution

The fourth proportional to 142,183.92, 196,238.99 and 81,749.82 is: 112,829.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,183.92 : 196,238.99 = 81,749.82 : x
  2. Step 2: Convert to fraction form
    142,183.92/196,238.99 = 81,749.82/x
  3. Step 3: Cross multiply
    142,183.92x = 196,238.99 × 81,749.82
  4. Step 4: Simplify right side
    142,183.92x = 16,042,502,109.48
  5. Step 5: Solve for x
    x = 16,042,502,109.48/142,183.92
  6. Step 6: Final answer
    x = 112,829.23

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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.