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Finding the Fourth Proportional to 115,170.70, 158,940.47 and 64,183.49

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Solution

The fourth proportional to 115,170.70, 158,940.47 and 64,183.49 is: 88,575.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,170.70 : 158,940.47 = 64,183.49 : x
  2. Step 2: Convert to fraction form
    115,170.70/158,940.47 = 64,183.49/x
  3. Step 3: Cross multiply
    115,170.70x = 158,940.47 × 64,183.49
  4. Step 4: Simplify right side
    115,170.70x = 10,201,354,066.84
  5. Step 5: Solve for x
    x = 10,201,354,066.84/115,170.70
  6. Step 6: Final answer
    x = 88,575.95

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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.