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Finding the Fourth Proportional to 150,578.76, 207,792.09 and 90,183

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Solution

The fourth proportional to 150,578.76, 207,792.09 and 90,183 is: 124,448.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,578.76 : 207,792.09 = 90,183 : x
  2. Step 2: Convert to fraction form
    150,578.76/207,792.09 = 90,183/x
  3. Step 3: Cross multiply
    150,578.76x = 207,792.09 × 90,183
  4. Step 4: Simplify right side
    150,578.76x = 18,739,314,052.47
  5. Step 5: Solve for x
    x = 18,739,314,052.47/150,578.76
  6. Step 6: Final answer
    x = 124,448.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.