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Finding the Fourth Proportional to 126,668.82, 174,733.85 and 81,353.70

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Solution

The fourth proportional to 126,668.82, 174,733.85 and 81,353.70 is: 112,223.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,668.82 : 174,733.85 = 81,353.70 : x
  2. Step 2: Convert to fraction form
    126,668.82/174,733.85 = 81,353.70/x
  3. Step 3: Cross multiply
    126,668.82x = 174,733.85 × 81,353.70
  4. Step 4: Simplify right side
    126,668.82x = 14,215,244,805.98
  5. Step 5: Solve for x
    x = 14,215,244,805.98/126,668.82
  6. Step 6: Final answer
    x = 112,223.71

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1.5x scale

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.