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Finding the Fourth Proportional to 180,245.70, 248,729.09 and 99,668.43

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Solution

The fourth proportional to 180,245.70, 248,729.09 and 99,668.43 is: 137,536.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,245.70 : 248,729.09 = 99,668.43 : x
  2. Step 2: Convert to fraction form
    180,245.70/248,729.09 = 99,668.43/x
  3. Step 3: Cross multiply
    180,245.70x = 248,729.09 × 99,668.43
  4. Step 4: Simplify right side
    180,245.70x = 24,790,437,397.29
  5. Step 5: Solve for x
    x = 24,790,437,397.29/180,245.70
  6. Step 6: Final answer
    x = 137,536.91

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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.