Home / 199,311.66-298,629.18-120,259.80

Finding the Fourth Proportional to 199,311.66, 298,629.18 and 120,259.80

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Solution

The fourth proportional to 199,311.66, 298,629.18 and 120,259.80 is: 180,185.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,311.66 : 298,629.18 = 120,259.80 : x
  2. Step 2: Convert to fraction form
    199,311.66/298,629.18 = 120,259.80/x
  3. Step 3: Cross multiply
    199,311.66x = 298,629.18 × 120,259.80
  4. Step 4: Simplify right side
    199,311.66x = 35,913,085,460.96
  5. Step 5: Solve for x
    x = 35,913,085,460.96/199,311.66
  6. Step 6: Final answer
    x = 180,185.57

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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.