Home / 190,640.36-285,910.43-90,601.52

Finding the Fourth Proportional to 190,640.36, 285,910.43 and 90,601.52

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Solution

The fourth proportional to 190,640.36, 285,910.43 and 90,601.52 is: 135,878.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,640.36 : 285,910.43 = 90,601.52 : x
  2. Step 2: Convert to fraction form
    190,640.36/285,910.43 = 90,601.52/x
  3. Step 3: Cross multiply
    190,640.36x = 285,910.43 × 90,601.52
  4. Step 4: Simplify right side
    190,640.36x = 25,903,919,088.85
  5. Step 5: Solve for x
    x = 25,903,919,088.85/190,640.36
  6. Step 6: Final answer
    x = 135,878.46

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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.