Home / 126,304.40-189,019.20-115,806.80

Finding the Fourth Proportional to 126,304.40, 189,019.20 and 115,806.80

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Solution

The fourth proportional to 126,304.40, 189,019.20 and 115,806.80 is: 173,309.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,304.40 : 189,019.20 = 115,806.80 : x
  2. Step 2: Convert to fraction form
    126,304.40/189,019.20 = 115,806.80/x
  3. Step 3: Cross multiply
    126,304.40x = 189,019.20 × 115,806.80
  4. Step 4: Simplify right side
    126,304.40x = 21,889,708,690.56
  5. Step 5: Solve for x
    x = 21,889,708,690.56/126,304.40
  6. Step 6: Final answer
    x = 173,309.15

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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.