Home / 199,383.90-298,817.50-80,990.66

Finding the Fourth Proportional to 199,383.90, 298,817.50 and 80,990.66

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Solution

The fourth proportional to 199,383.90, 298,817.50 and 80,990.66 is: 121,381.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,383.90 : 298,817.50 = 80,990.66 : x
  2. Step 2: Convert to fraction form
    199,383.90/298,817.50 = 80,990.66/x
  3. Step 3: Cross multiply
    199,383.90x = 298,817.50 × 80,990.66
  4. Step 4: Simplify right side
    199,383.90x = 24,201,426,544.55
  5. Step 5: Solve for x
    x = 24,201,426,544.55/199,383.90
  6. Step 6: Final answer
    x = 121,381.05

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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.