Home / 189,286.83-261,215.31-108,719.55

Finding the Fourth Proportional to 189,286.83, 261,215.31 and 108,719.55

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Solution

The fourth proportional to 189,286.83, 261,215.31 and 108,719.55 is: 150,032.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,286.83 : 261,215.31 = 108,719.55 : x
  2. Step 2: Convert to fraction form
    189,286.83/261,215.31 = 108,719.55/x
  3. Step 3: Cross multiply
    189,286.83x = 261,215.31 × 108,719.55
  4. Step 4: Simplify right side
    189,286.83x = 28,399,210,956.31
  5. Step 5: Solve for x
    x = 28,399,210,956.31/189,286.83
  6. Step 6: Final answer
    x = 150,032.68

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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.