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Finding the Fourth Proportional to 189,505.37, 261,529.36 and 108,945.41

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Solution

The fourth proportional to 189,505.37, 261,529.36 and 108,945.41 is: 150,351.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,505.37 : 261,529.36 = 108,945.41 : x
  2. Step 2: Convert to fraction form
    189,505.37/261,529.36 = 108,945.41/x
  3. Step 3: Cross multiply
    189,505.37x = 261,529.36 × 108,945.41
  4. Step 4: Simplify right side
    189,505.37x = 28,492,421,772.23
  5. Step 5: Solve for x
    x = 28,492,421,772.23/189,505.37
  6. Step 6: Final answer
    x = 150,351.53

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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.