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Finding the Fourth Proportional to 150,645.78, 207,884.16 and 82,661.22

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Solution

The fourth proportional to 150,645.78, 207,884.16 and 82,661.22 is: 114,068.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,645.78 : 207,884.16 = 82,661.22 : x
  2. Step 2: Convert to fraction form
    150,645.78/207,884.16 = 82,661.22/x
  3. Step 3: Cross multiply
    150,645.78x = 207,884.16 × 82,661.22
  4. Step 4: Simplify right side
    150,645.78x = 17,183,958,284.28
  5. Step 5: Solve for x
    x = 17,183,958,284.28/150,645.78
  6. Step 6: Final answer
    x = 114,068.63

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1.5x scale

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.