Home / 138,687.96-191,327.64-82,066.56

Finding the Fourth Proportional to 138,687.96, 191,327.64 and 82,066.56

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Solution

The fourth proportional to 138,687.96, 191,327.64 and 82,066.56 is: 113,215.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,687.96 : 191,327.64 = 82,066.56 : x
  2. Step 2: Convert to fraction form
    138,687.96/191,327.64 = 82,066.56/x
  3. Step 3: Cross multiply
    138,687.96x = 191,327.64 × 82,066.56
  4. Step 4: Simplify right side
    138,687.96x = 15,701,601,247.72
  5. Step 5: Solve for x
    x = 15,701,601,247.72/138,687.96
  6. Step 6: Final answer
    x = 113,215.32

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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.