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Finding the Fourth Proportional to 131,469.20, 197,203.80 and 61,355.60

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Solution

The fourth proportional to 131,469.20, 197,203.80 and 61,355.60 is: 92,033.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,469.20 : 197,203.80 = 61,355.60 : x
  2. Step 2: Convert to fraction form
    131,469.20/197,203.80 = 61,355.60/x
  3. Step 3: Cross multiply
    131,469.20x = 197,203.80 × 61,355.60
  4. Step 4: Simplify right side
    131,469.20x = 12,099,557,471.28
  5. Step 5: Solve for x
    x = 12,099,557,471.28/131,469.20
  6. Step 6: Final answer
    x = 92,033.40

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1.5x scale

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.