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Finding the Fourth Proportional to 140,366.60, 193,702.60 and 76,704.72

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Solution

The fourth proportional to 140,366.60, 193,702.60 and 76,704.72 is: 105,850.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,366.60 : 193,702.60 = 76,704.72 : x
  2. Step 2: Convert to fraction form
    140,366.60/193,702.60 = 76,704.72/x
  3. Step 3: Cross multiply
    140,366.60x = 193,702.60 × 76,704.72
  4. Step 4: Simplify right side
    140,366.60x = 14,857,903,696.27
  5. Step 5: Solve for x
    x = 14,857,903,696.27/140,366.60
  6. Step 6: Final answer
    x = 105,850.71

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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.