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Finding the Fourth Proportional to 83,125.64, 125,249.60 and 68,658.64

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Solution

The fourth proportional to 83,125.64, 125,249.60 and 68,658.64 is: 103,451.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,125.64 : 125,249.60 = 68,658.64 : x
  2. Step 2: Convert to fraction form
    83,125.64/125,249.60 = 68,658.64/x
  3. Step 3: Cross multiply
    83,125.64x = 125,249.60 × 68,658.64
  4. Step 4: Simplify right side
    83,125.64x = 8,599,467,196.54
  5. Step 5: Solve for x
    x = 8,599,467,196.54/83,125.64
  6. Step 6: Final answer
    x = 103,451.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.