Home / 156,119.31-215,446.42-91,589.65

Finding the Fourth Proportional to 156,119.31, 215,446.42 and 91,589.65

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Solution

The fourth proportional to 156,119.31, 215,446.42 and 91,589.65 is: 126,394.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,119.31 : 215,446.42 = 91,589.65 : x
  2. Step 2: Convert to fraction form
    156,119.31/215,446.42 = 91,589.65/x
  3. Step 3: Cross multiply
    156,119.31x = 215,446.42 × 91,589.65
  4. Step 4: Simplify right side
    156,119.31x = 19,732,661,433.96
  5. Step 5: Solve for x
    x = 19,732,661,433.96/156,119.31
  6. Step 6: Final answer
    x = 126,394.75

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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.