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Finding the Fourth Proportional to 185,393.68, 278,112.12 and 67,120.72

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Solution

The fourth proportional to 185,393.68, 278,112.12 and 67,120.72 is: 100,688.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,393.68 : 278,112.12 = 67,120.72 : x
  2. Step 2: Convert to fraction form
    185,393.68/278,112.12 = 67,120.72/x
  3. Step 3: Cross multiply
    185,393.68x = 278,112.12 × 67,120.72
  4. Step 4: Simplify right side
    185,393.68x = 18,667,085,735.13
  5. Step 5: Solve for x
    x = 18,667,085,735.13/185,393.68
  6. Step 6: Final answer
    x = 100,688.90

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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.