Home / 119,839.14-179,618.76-90,161.64

Finding the Fourth Proportional to 119,839.14, 179,618.76 and 90,161.64

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Solution

The fourth proportional to 119,839.14, 179,618.76 and 90,161.64 is: 135,137.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,839.14 : 179,618.76 = 90,161.64 : x
  2. Step 2: Convert to fraction form
    119,839.14/179,618.76 = 90,161.64/x
  3. Step 3: Cross multiply
    119,839.14x = 179,618.76 × 90,161.64
  4. Step 4: Simplify right side
    119,839.14x = 16,194,721,976.37
  5. Step 5: Solve for x
    x = 16,194,721,976.37/119,839.14
  6. Step 6: Final answer
    x = 135,137.17

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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.