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Finding the Fourth Proportional to 111,832.47, 154,249.13 and 68,755.53

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Solution

The fourth proportional to 111,832.47, 154,249.13 and 68,755.53 is: 94,833.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,832.47 : 154,249.13 = 68,755.53 : x
  2. Step 2: Convert to fraction form
    111,832.47/154,249.13 = 68,755.53/x
  3. Step 3: Cross multiply
    111,832.47x = 154,249.13 × 68,755.53
  4. Step 4: Simplify right side
    111,832.47x = 10,605,480,341.41
  5. Step 5: Solve for x
    x = 10,605,480,341.41/111,832.47
  6. Step 6: Final answer
    x = 94,833.64

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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.