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Finding the Fourth Proportional to 168,768.70, 253,153.05 and 149,085.70

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Solution

The fourth proportional to 168,768.70, 253,153.05 and 149,085.70 is: 223,628.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,768.70 : 253,153.05 = 149,085.70 : x
  2. Step 2: Convert to fraction form
    168,768.70/253,153.05 = 149,085.70/x
  3. Step 3: Cross multiply
    168,768.70x = 253,153.05 × 149,085.70
  4. Step 4: Simplify right side
    168,768.70x = 37,741,499,666.39
  5. Step 5: Solve for x
    x = 37,741,499,666.39/168,768.70
  6. Step 6: Final answer
    x = 223,628.55

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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.