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Finding the Fourth Proportional to 116,286.64, 160,524.32 and 78,611.92

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Solution

The fourth proportional to 116,286.64, 160,524.32 and 78,611.92 is: 108,517.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,286.64 : 160,524.32 = 78,611.92 : x
  2. Step 2: Convert to fraction form
    116,286.64/160,524.32 = 78,611.92/x
  3. Step 3: Cross multiply
    116,286.64x = 160,524.32 × 78,611.92
  4. Step 4: Simplify right side
    116,286.64x = 12,619,125,001.89
  5. Step 5: Solve for x
    x = 12,619,125,001.89/116,286.64
  6. Step 6: Final answer
    x = 108,517.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.