Home / 131,271.20-196,906.80-61,157.60

Finding the Fourth Proportional to 131,271.20, 196,906.80 and 61,157.60

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Solution

The fourth proportional to 131,271.20, 196,906.80 and 61,157.60 is: 91,736.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,271.20 : 196,906.80 = 61,157.60 : x
  2. Step 2: Convert to fraction form
    131,271.20/196,906.80 = 61,157.60/x
  3. Step 3: Cross multiply
    131,271.20x = 196,906.80 × 61,157.60
  4. Step 4: Simplify right side
    131,271.20x = 12,042,347,311.68
  5. Step 5: Solve for x
    x = 12,042,347,311.68/131,271.20
  6. Step 6: Final answer
    x = 91,736.40

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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.