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Finding the Fourth Proportional to 137,908.80, 206,863.20 and 67,773.60

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Solution

The fourth proportional to 137,908.80, 206,863.20 and 67,773.60 is: 101,660.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,908.80 : 206,863.20 = 67,773.60 : x
  2. Step 2: Convert to fraction form
    137,908.80/206,863.20 = 67,773.60/x
  3. Step 3: Cross multiply
    137,908.80x = 206,863.20 × 67,773.60
  4. Step 4: Simplify right side
    137,908.80x = 14,019,863,771.52
  5. Step 5: Solve for x
    x = 14,019,863,771.52/137,908.80
  6. Step 6: Final answer
    x = 101,660.40

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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.