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Finding the Fourth Proportional to 109,640.64, 151,307.72 and 67,190.97

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Solution

The fourth proportional to 109,640.64, 151,307.72 and 67,190.97 is: 92,725.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,640.64 : 151,307.72 = 67,190.97 : x
  2. Step 2: Convert to fraction form
    109,640.64/151,307.72 = 67,190.97/x
  3. Step 3: Cross multiply
    109,640.64x = 151,307.72 × 67,190.97
  4. Step 4: Simplify right side
    109,640.64x = 10,166,512,139.33
  5. Step 5: Solve for x
    x = 10,166,512,139.33/109,640.64
  6. Step 6: Final answer
    x = 92,725.76

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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.