Home / 198,668.10-298,189.44-72,430.37

Finding the Fourth Proportional to 198,668.10, 298,189.44 and 72,430.37

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Solution

The fourth proportional to 198,668.10, 298,189.44 and 72,430.37 is: 108,713.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,668.10 : 298,189.44 = 72,430.37 : x
  2. Step 2: Convert to fraction form
    198,668.10/298,189.44 = 72,430.37/x
  3. Step 3: Cross multiply
    198,668.10x = 298,189.44 × 72,430.37
  4. Step 4: Simplify right side
    198,668.10x = 21,597,969,978.35
  5. Step 5: Solve for x
    x = 21,597,969,978.35/198,668.10
  6. Step 6: Final answer
    x = 108,713.83

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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.