Home / 199,991.15-299,986.73-80,102.54

Finding the Fourth Proportional to 199,991.15, 299,986.73 and 80,102.54

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Solution

The fourth proportional to 199,991.15, 299,986.73 and 80,102.54 is: 120,153.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,991.15 : 299,986.73 = 80,102.54 : x
  2. Step 2: Convert to fraction form
    199,991.15/299,986.73 = 80,102.54/x
  3. Step 3: Cross multiply
    199,991.15x = 299,986.73 × 80,102.54
  4. Step 4: Simplify right side
    199,991.15x = 24,029,697,138.85
  5. Step 5: Solve for x
    x = 24,029,697,138.85/199,991.15
  6. Step 6: Final answer
    x = 120,153.81

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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.