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Finding the Fourth Proportional to 131,281.20, 196,630.20 and 113,785.20

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Solution

The fourth proportional to 131,281.20, 196,630.20 and 113,785.20 is: 170,425.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,281.20 : 196,630.20 = 113,785.20 : x
  2. Step 2: Convert to fraction form
    131,281.20/196,630.20 = 113,785.20/x
  3. Step 3: Cross multiply
    131,281.20x = 196,630.20 × 113,785.20
  4. Step 4: Simplify right side
    131,281.20x = 22,373,606,633.04
  5. Step 5: Solve for x
    x = 22,373,606,633.04/131,281.20
  6. Step 6: Final answer
    x = 170,425.06

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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.