Home / 190,636.24-285,768.42-90,769.60

Finding the Fourth Proportional to 190,636.24, 285,768.42 and 90,769.60

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Solution

The fourth proportional to 190,636.24, 285,768.42 and 90,769.60 is: 136,065.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,636.24 : 285,768.42 = 90,769.60 : x
  2. Step 2: Convert to fraction form
    190,636.24/285,768.42 = 90,769.60/x
  3. Step 3: Cross multiply
    190,636.24x = 285,768.42 × 90,769.60
  4. Step 4: Simplify right side
    190,636.24x = 25,939,085,176.03
  5. Step 5: Solve for x
    x = 25,939,085,176.03/190,636.24
  6. Step 6: Final answer
    x = 136,065.87

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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.