Home / 126,257.93-189,432.44-78,170.57

Finding the Fourth Proportional to 126,257.93, 189,432.44 and 78,170.57

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Solution

The fourth proportional to 126,257.93, 189,432.44 and 78,170.57 is: 117,284.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,257.93 : 189,432.44 = 78,170.57 : x
  2. Step 2: Convert to fraction form
    126,257.93/189,432.44 = 78,170.57/x
  3. Step 3: Cross multiply
    126,257.93x = 189,432.44 × 78,170.57
  4. Step 4: Simplify right side
    126,257.93x = 14,808,042,480.30
  5. Step 5: Solve for x
    x = 14,808,042,480.30/126,257.93
  6. Step 6: Final answer
    x = 117,284.06

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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.