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Finding the Fourth Proportional to 131,622.72, 197,451.32 and 69,296.64

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Solution

The fourth proportional to 131,622.72, 197,451.32 and 69,296.64 is: 103,954.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,622.72 : 197,451.32 = 69,296.64 : x
  2. Step 2: Convert to fraction form
    131,622.72/197,451.32 = 69,296.64/x
  3. Step 3: Cross multiply
    131,622.72x = 197,451.32 × 69,296.64
  4. Step 4: Simplify right side
    131,622.72x = 13,682,713,039.56
  5. Step 5: Solve for x
    x = 13,682,713,039.56/131,622.72
  6. Step 6: Final answer
    x = 103,954.04

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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.