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Finding the Fourth Proportional to 203,744.57, 305,689.75 and 103,929.89

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Solution

The fourth proportional to 203,744.57, 305,689.75 and 103,929.89 is: 155,932.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,744.57 : 305,689.75 = 103,929.89 : x
  2. Step 2: Convert to fraction form
    203,744.57/305,689.75 = 103,929.89/x
  3. Step 3: Cross multiply
    203,744.57x = 305,689.75 × 103,929.89
  4. Step 4: Simplify right side
    203,744.57x = 31,770,300,303.35
  5. Step 5: Solve for x
    x = 31,770,300,303.35/203,744.57
  6. Step 6: Final answer
    x = 155,932.01

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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.