Home / 138,788.24-191,528.35-82,195.97

Finding the Fourth Proportional to 138,788.24, 191,528.35 and 82,195.97

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Solution

The fourth proportional to 138,788.24, 191,528.35 and 82,195.97 is: 113,430.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,788.24 : 191,528.35 = 82,195.97 : x
  2. Step 2: Convert to fraction form
    138,788.24/191,528.35 = 82,195.97/x
  3. Step 3: Cross multiply
    138,788.24x = 191,528.35 × 82,195.97
  4. Step 4: Simplify right side
    138,788.24x = 15,742,857,347.62
  5. Step 5: Solve for x
    x = 15,742,857,347.62/138,788.24
  6. Step 6: Final answer
    x = 113,430.78

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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.