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Finding the Fourth Proportional to 131,367.70, 197,120.40 and 60,311.80

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Solution

The fourth proportional to 131,367.70, 197,120.40 and 60,311.80 is: 90,499.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,367.70 : 197,120.40 = 60,311.80 : x
  2. Step 2: Convert to fraction form
    131,367.70/197,120.40 = 60,311.80/x
  3. Step 3: Cross multiply
    131,367.70x = 197,120.40 × 60,311.80
  4. Step 4: Simplify right side
    131,367.70x = 11,888,686,140.72
  5. Step 5: Solve for x
    x = 11,888,686,140.72/131,367.70
  6. Step 6: Final answer
    x = 90,499.31

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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.