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Finding the Fourth Proportional to 131,230.40, 196,845.60 and 122,417.60

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Solution

The fourth proportional to 131,230.40, 196,845.60 and 122,417.60 is: 183,626.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,230.40 : 196,845.60 = 122,417.60 : x
  2. Step 2: Convert to fraction form
    131,230.40/196,845.60 = 122,417.60/x
  3. Step 3: Cross multiply
    131,230.40x = 196,845.60 × 122,417.60
  4. Step 4: Simplify right side
    131,230.40x = 24,097,365,922.56
  5. Step 5: Solve for x
    x = 24,097,365,922.56/131,230.40
  6. Step 6: Final answer
    x = 183,626.40

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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.