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Finding the Fourth Proportional to 131,481.20, 197,113.80 and 56,658.80

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Solution

The fourth proportional to 131,481.20, 197,113.80 and 56,658.80 is: 84,941.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,481.20 : 197,113.80 = 56,658.80 : x
  2. Step 2: Convert to fraction form
    131,481.20/197,113.80 = 56,658.80/x
  3. Step 3: Cross multiply
    131,481.20x = 197,113.80 × 56,658.80
  4. Step 4: Simplify right side
    131,481.20x = 11,168,231,371.44
  5. Step 5: Solve for x
    x = 11,168,231,371.44/131,481.20
  6. Step 6: Final answer
    x = 84,941.66

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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.