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Finding the Fourth Proportional to 180,155.89, 248,604.32 and 99,578.61

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Solution

The fourth proportional to 180,155.89, 248,604.32 and 99,578.61 is: 137,412.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,155.89 : 248,604.32 = 99,578.61 : x
  2. Step 2: Convert to fraction form
    180,155.89/248,604.32 = 99,578.61/x
  3. Step 3: Cross multiply
    180,155.89x = 248,604.32 × 99,578.61
  4. Step 4: Simplify right side
    180,155.89x = 24,755,672,874.54
  5. Step 5: Solve for x
    x = 24,755,672,874.54/180,155.89
  6. Step 6: Final answer
    x = 137,412.51

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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.