Home / 133,023.90-199,545.45-80,319.90

Finding the Fourth Proportional to 133,023.90, 199,545.45 and 80,319.90

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Solution

The fourth proportional to 133,023.90, 199,545.45 and 80,319.90 is: 120,485.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,023.90 : 199,545.45 = 80,319.90 : x
  2. Step 2: Convert to fraction form
    133,023.90/199,545.45 = 80,319.90/x
  3. Step 3: Cross multiply
    133,023.90x = 199,545.45 × 80,319.90
  4. Step 4: Simplify right side
    133,023.90x = 16,027,470,589.46
  5. Step 5: Solve for x
    x = 16,027,470,589.46/133,023.90
  6. Step 6: Final answer
    x = 120,485.65

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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.