Home / 119,905.72-179,730.70-90,231.77

Finding the Fourth Proportional to 119,905.72, 179,730.70 and 90,231.77

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Solution

The fourth proportional to 119,905.72, 179,730.70 and 90,231.77 is: 135,251.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,905.72 : 179,730.70 = 90,231.77 : x
  2. Step 2: Convert to fraction form
    119,905.72/179,730.70 = 90,231.77/x
  3. Step 3: Cross multiply
    119,905.72x = 179,730.70 × 90,231.77
  4. Step 4: Simplify right side
    119,905.72x = 16,217,419,408.09
  5. Step 5: Solve for x
    x = 16,217,419,408.09/119,905.72
  6. Step 6: Final answer
    x = 135,251.43

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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.