Home / 189,211.75-261,100.77-108,631.73

Finding the Fourth Proportional to 189,211.75, 261,100.77 and 108,631.73

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Solution

The fourth proportional to 189,211.75, 261,100.77 and 108,631.73 is: 149,905.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,211.75 : 261,100.77 = 108,631.73 : x
  2. Step 2: Convert to fraction form
    189,211.75/261,100.77 = 108,631.73/x
  3. Step 3: Cross multiply
    189,211.75x = 261,100.77 × 108,631.73
  4. Step 4: Simplify right side
    189,211.75x = 28,363,828,594.82
  5. Step 5: Solve for x
    x = 28,363,828,594.82/189,211.75
  6. Step 6: Final answer
    x = 149,905.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.