Home / 126,521.12-189,687.93-76,589.42

Finding the Fourth Proportional to 126,521.12, 189,687.93 and 76,589.42

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Solution

The fourth proportional to 126,521.12, 189,687.93 and 76,589.42 is: 114,827.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,521.12 : 189,687.93 = 76,589.42 : x
  2. Step 2: Convert to fraction form
    126,521.12/189,687.93 = 76,589.42/x
  3. Step 3: Cross multiply
    126,521.12x = 189,687.93 × 76,589.42
  4. Step 4: Simplify right side
    126,521.12x = 14,528,087,304.05
  5. Step 5: Solve for x
    x = 14,528,087,304.05/126,521.12
  6. Step 6: Final answer
    x = 114,827.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.