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Finding the Fourth Proportional to 192,372.60, 288,704.70 and 125,790.60

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Solution

The fourth proportional to 192,372.60, 288,704.70 and 125,790.60 is: 188,781.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,372.60 : 288,704.70 = 125,790.60 : x
  2. Step 2: Convert to fraction form
    192,372.60/288,704.70 = 125,790.60/x
  3. Step 3: Cross multiply
    192,372.60x = 288,704.70 × 125,790.60
  4. Step 4: Simplify right side
    192,372.60x = 36,316,337,435.82
  5. Step 5: Solve for x
    x = 36,316,337,435.82/192,372.60
  6. Step 6: Final answer
    x = 188,781.24

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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.