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Finding the Fourth Proportional to 139,620.60, 192,677.26 and 75,958.85

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Solution

The fourth proportional to 139,620.60, 192,677.26 and 75,958.85 is: 104,823.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,620.60 : 192,677.26 = 75,958.85 : x
  2. Step 2: Convert to fraction form
    139,620.60/192,677.26 = 75,958.85/x
  3. Step 3: Cross multiply
    139,620.60x = 192,677.26 × 75,958.85
  4. Step 4: Simplify right side
    139,620.60x = 14,635,543,090.75
  5. Step 5: Solve for x
    x = 14,635,543,090.75/139,620.60
  6. Step 6: Final answer
    x = 104,823.67

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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.