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Finding the Fourth Proportional to 139,234.44, 192,143.72 and 75,572.20

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Solution

The fourth proportional to 139,234.44, 192,143.72 and 75,572.20 is: 104,289.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,234.44 : 192,143.72 = 75,572.20 : x
  2. Step 2: Convert to fraction form
    139,234.44/192,143.72 = 75,572.20/x
  3. Step 3: Cross multiply
    139,234.44x = 192,143.72 × 75,572.20
  4. Step 4: Simplify right side
    139,234.44x = 14,520,723,636.58
  5. Step 5: Solve for x
    x = 14,520,723,636.58/139,234.44
  6. Step 6: Final answer
    x = 104,289.74

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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.