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Finding the Fourth Proportional to 135,878.88, 203,440.40 and 69,175.44

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Solution

The fourth proportional to 135,878.88, 203,440.40 and 69,175.44 is: 103,570.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,878.88 : 203,440.40 = 69,175.44 : x
  2. Step 2: Convert to fraction form
    135,878.88/203,440.40 = 69,175.44/x
  3. Step 3: Cross multiply
    135,878.88x = 203,440.40 × 69,175.44
  4. Step 4: Simplify right side
    135,878.88x = 14,073,079,183.78
  5. Step 5: Solve for x
    x = 14,073,079,183.78/135,878.88
  6. Step 6: Final answer
    x = 103,570.76

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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.