Home / 188,128.82-282,236.33-81,530.66

Finding the Fourth Proportional to 188,128.82, 282,236.33 and 81,530.66

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Solution

The fourth proportional to 188,128.82, 282,236.33 and 81,530.66 is: 122,314.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,128.82 : 282,236.33 = 81,530.66 : x
  2. Step 2: Convert to fraction form
    188,128.82/282,236.33 = 81,530.66/x
  3. Step 3: Cross multiply
    188,128.82x = 282,236.33 × 81,530.66
  4. Step 4: Simplify right side
    188,128.82x = 23,010,914,260.88
  5. Step 5: Solve for x
    x = 23,010,914,260.88/188,128.82
  6. Step 6: Final answer
    x = 122,314.67

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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.