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Finding the Fourth Proportional to 199,108.80, 298,663.20 and 125,380.80

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Solution

The fourth proportional to 199,108.80, 298,663.20 and 125,380.80 is: 188,071.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,108.80 : 298,663.20 = 125,380.80 : x
  2. Step 2: Convert to fraction form
    199,108.80/298,663.20 = 125,380.80/x
  3. Step 3: Cross multiply
    199,108.80x = 298,663.20 × 125,380.80
  4. Step 4: Simplify right side
    199,108.80x = 37,446,630,946.56
  5. Step 5: Solve for x
    x = 37,446,630,946.56/199,108.80
  6. Step 6: Final answer
    x = 188,071.20

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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.