Home / 199,385.90-298,820.50-80,992.66

Finding the Fourth Proportional to 199,385.90, 298,820.50 and 80,992.66

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Solution

The fourth proportional to 199,385.90, 298,820.50 and 80,992.66 is: 121,384.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,385.90 : 298,820.50 = 80,992.66 : x
  2. Step 2: Convert to fraction form
    199,385.90/298,820.50 = 80,992.66/x
  3. Step 3: Cross multiply
    199,385.90x = 298,820.50 × 80,992.66
  4. Step 4: Simplify right side
    199,385.90x = 24,202,267,157.53
  5. Step 5: Solve for x
    x = 24,202,267,157.53/199,385.90
  6. Step 6: Final answer
    x = 121,384.05

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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.