Home / 189,908.85-285,003.23-90,069.33

Finding the Fourth Proportional to 189,908.85, 285,003.23 and 90,069.33

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Solution

The fourth proportional to 189,908.85, 285,003.23 and 90,069.33 is: 135,170.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,908.85 : 285,003.23 = 90,069.33 : x
  2. Step 2: Convert to fraction form
    189,908.85/285,003.23 = 90,069.33/x
  3. Step 3: Cross multiply
    189,908.85x = 285,003.23 × 90,069.33
  4. Step 4: Simplify right side
    189,908.85x = 25,670,049,973.94
  5. Step 5: Solve for x
    x = 25,670,049,973.94/189,908.85
  6. Step 6: Final answer
    x = 135,170.37

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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.