Home / 192,876.12-289,360.35-80,493.75

Finding the Fourth Proportional to 192,876.12, 289,360.35 and 80,493.75

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Solution

The fourth proportional to 192,876.12, 289,360.35 and 80,493.75 is: 120,759.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,876.12 : 289,360.35 = 80,493.75 : x
  2. Step 2: Convert to fraction form
    192,876.12/289,360.35 = 80,493.75/x
  3. Step 3: Cross multiply
    192,876.12x = 289,360.35 × 80,493.75
  4. Step 4: Simplify right side
    192,876.12x = 23,291,699,672.81
  5. Step 5: Solve for x
    x = 23,291,699,672.81/192,876.12
  6. Step 6: Final answer
    x = 120,759.89

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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.