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Finding the Fourth Proportional to 131,765.10, 197,662.05 and 127,617.90

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Solution

The fourth proportional to 131,765.10, 197,662.05 and 127,617.90 is: 191,440.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,765.10 : 197,662.05 = 127,617.90 : x
  2. Step 2: Convert to fraction form
    131,765.10/197,662.05 = 127,617.90/x
  3. Step 3: Cross multiply
    131,765.10x = 197,662.05 × 127,617.90
  4. Step 4: Simplify right side
    131,765.10x = 25,225,215,730.70
  5. Step 5: Solve for x
    x = 25,225,215,730.70/131,765.10
  6. Step 6: Final answer
    x = 191,440.80

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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.