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Finding the Fourth Proportional to 117,085.80, 161,578.22 and 63,370.78

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Solution

The fourth proportional to 117,085.80, 161,578.22 and 63,370.78 is: 87,451.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,085.80 : 161,578.22 = 63,370.78 : x
  2. Step 2: Convert to fraction form
    117,085.80/161,578.22 = 63,370.78/x
  3. Step 3: Cross multiply
    117,085.80x = 161,578.22 × 63,370.78
  4. Step 4: Simplify right side
    117,085.80x = 10,239,337,832.41
  5. Step 5: Solve for x
    x = 10,239,337,832.41/117,085.80
  6. Step 6: Final answer
    x = 87,451.58

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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.