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Finding the Fourth Proportional to 203,946.09, 305,814.03 and 91,529.91

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Solution

The fourth proportional to 203,946.09, 305,814.03 and 91,529.91 is: 137,247.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,946.09 : 305,814.03 = 91,529.91 : x
  2. Step 2: Convert to fraction form
    203,946.09/305,814.03 = 91,529.91/x
  3. Step 3: Cross multiply
    203,946.09x = 305,814.03 × 91,529.91
  4. Step 4: Simplify right side
    203,946.09x = 27,991,130,642.64
  5. Step 5: Solve for x
    x = 27,991,130,642.64/203,946.09
  6. Step 6: Final answer
    x = 137,247.69

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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.