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Finding the Fourth Proportional to 136,379.96, 188,190.85 and 75,956.21

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Solution

The fourth proportional to 136,379.96, 188,190.85 and 75,956.21 is: 104,812.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,379.96 : 188,190.85 = 75,956.21 : x
  2. Step 2: Convert to fraction form
    136,379.96/188,190.85 = 75,956.21/x
  3. Step 3: Cross multiply
    136,379.96x = 188,190.85 × 75,956.21
  4. Step 4: Simplify right side
    136,379.96x = 14,294,263,342.90
  5. Step 5: Solve for x
    x = 14,294,263,342.90/136,379.96
  6. Step 6: Final answer
    x = 104,812.05

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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.