Home / 190,245.65-285,412.22-57,128.43

Finding the Fourth Proportional to 190,245.65, 285,412.22 and 57,128.43

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Solution

The fourth proportional to 190,245.65, 285,412.22 and 57,128.43 is: 85,705.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,245.65 : 285,412.22 = 57,128.43 : x
  2. Step 2: Convert to fraction form
    190,245.65/285,412.22 = 57,128.43/x
  3. Step 3: Cross multiply
    190,245.65x = 285,412.22 × 57,128.43
  4. Step 4: Simplify right side
    190,245.65x = 16,305,151,745.77
  5. Step 5: Solve for x
    x = 16,305,151,745.77/190,245.65
  6. Step 6: Final answer
    x = 85,705.78

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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.