Home / 120,320.75-180,480.62-30,363.67

Finding the Fourth Proportional to 120,320.75, 180,480.62 and 30,363.67

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Solution

The fourth proportional to 120,320.75, 180,480.62 and 30,363.67 is: 45,545.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,320.75 : 180,480.62 = 30,363.67 : x
  2. Step 2: Convert to fraction form
    120,320.75/180,480.62 = 30,363.67/x
  3. Step 3: Cross multiply
    120,320.75x = 180,480.62 × 30,363.67
  4. Step 4: Simplify right side
    120,320.75x = 5,480,053,611.78
  5. Step 5: Solve for x
    x = 5,480,053,611.78/120,320.75
  6. Step 6: Final answer
    x = 45,545.37

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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.