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Finding the Fourth Proportional to 119,785.77, 179,221.82 and 72,225.81

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Solution

The fourth proportional to 119,785.77, 179,221.82 and 72,225.81 is: 108,063.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,785.77 : 179,221.82 = 72,225.81 : x
  2. Step 2: Convert to fraction form
    119,785.77/179,221.82 = 72,225.81/x
  3. Step 3: Cross multiply
    119,785.77x = 179,221.82 × 72,225.81
  4. Step 4: Simplify right side
    119,785.77x = 12,944,440,758.05
  5. Step 5: Solve for x
    x = 12,944,440,758.05/119,785.77
  6. Step 6: Final answer
    x = 108,063.26

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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.