Home / 138,606.92-191,277.29-78,177.37

Finding the Fourth Proportional to 138,606.92, 191,277.29 and 78,177.37

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Solution

The fourth proportional to 138,606.92, 191,277.29 and 78,177.37 is: 107,884.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,606.92 : 191,277.29 = 78,177.37 : x
  2. Step 2: Convert to fraction form
    138,606.92/191,277.29 = 78,177.37/x
  3. Step 3: Cross multiply
    138,606.92x = 191,277.29 × 78,177.37
  4. Step 4: Simplify right side
    138,606.92x = 14,953,555,472.93
  5. Step 5: Solve for x
    x = 14,953,555,472.93/138,606.92
  6. Step 6: Final answer
    x = 107,884.62

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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.