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Finding the Fourth Proportional to 120,522.73, 180,785.99 and 45,622.77

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Solution

The fourth proportional to 120,522.73, 180,785.99 and 45,622.77 is: 68,434.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,522.73 : 180,785.99 = 45,622.77 : x
  2. Step 2: Convert to fraction form
    120,522.73/180,785.99 = 45,622.77/x
  3. Step 3: Cross multiply
    120,522.73x = 180,785.99 × 45,622.77
  4. Step 4: Simplify right side
    120,522.73x = 8,247,956,737.06
  5. Step 5: Solve for x
    x = 8,247,956,737.06/120,522.73
  6. Step 6: Final answer
    x = 68,434.86

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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.