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Finding the Fourth Proportional to 203,120.94, 304,719.46 and 90,805.62

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Solution

The fourth proportional to 203,120.94, 304,719.46 and 90,805.62 is: 136,225.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,120.94 : 304,719.46 = 90,805.62 : x
  2. Step 2: Convert to fraction form
    203,120.94/304,719.46 = 90,805.62/x
  3. Step 3: Cross multiply
    203,120.94x = 304,719.46 × 90,805.62
  4. Step 4: Simplify right side
    203,120.94x = 27,670,239,491.37
  5. Step 5: Solve for x
    x = 27,670,239,491.37/203,120.94
  6. Step 6: Final answer
    x = 136,225.44

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1.5x scale

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.