Home / 126,698.31-189,668.85-76,626.95

Finding the Fourth Proportional to 126,698.31, 189,668.85 and 76,626.95

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Solution

The fourth proportional to 126,698.31, 189,668.85 and 76,626.95 is: 114,711.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,698.31 : 189,668.85 = 76,626.95 : x
  2. Step 2: Convert to fraction form
    126,698.31/189,668.85 = 76,626.95/x
  3. Step 3: Cross multiply
    126,698.31x = 189,668.85 × 76,626.95
  4. Step 4: Simplify right side
    126,698.31x = 14,533,744,537.16
  5. Step 5: Solve for x
    x = 14,533,744,537.16/126,698.31
  6. Step 6: Final answer
    x = 114,711.43

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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.