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Finding the Fourth Proportional to 192,701.80, 289,311.90 and 122,717.80

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Solution

The fourth proportional to 192,701.80, 289,311.90 and 122,717.80 is: 184,241.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,701.80 : 289,311.90 = 122,717.80 : x
  2. Step 2: Convert to fraction form
    192,701.80/289,311.90 = 122,717.80/x
  3. Step 3: Cross multiply
    192,701.80x = 289,311.90 × 122,717.80
  4. Step 4: Simplify right side
    192,701.80x = 35,503,719,881.82
  5. Step 5: Solve for x
    x = 35,503,719,881.82/192,701.80
  6. Step 6: Final answer
    x = 184,241.77

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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.