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Finding the Fourth Proportional to 174,279, 261,313.04 and 78,198.60

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Solution

The fourth proportional to 174,279, 261,313.04 and 78,198.60 is: 117,250.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,279 : 261,313.04 = 78,198.60 : x
  2. Step 2: Convert to fraction form
    174,279/261,313.04 = 78,198.60/x
  3. Step 3: Cross multiply
    174,279x = 261,313.04 × 78,198.60
  4. Step 4: Simplify right side
    174,279x = 20,434,314,085.24
  5. Step 5: Solve for x
    x = 20,434,314,085.24/174,279
  6. Step 6: Final answer
    x = 117,250.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.