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Finding the Fourth Proportional to 203,103.92, 304,439.77 and 76,690.35

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Solution

The fourth proportional to 203,103.92, 304,439.77 and 76,690.35 is: 114,953.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,103.92 : 304,439.77 = 76,690.35 : x
  2. Step 2: Convert to fraction form
    203,103.92/304,439.77 = 76,690.35/x
  3. Step 3: Cross multiply
    203,103.92x = 304,439.77 × 76,690.35
  4. Step 4: Simplify right side
    203,103.92x = 23,347,592,515.22
  5. Step 5: Solve for x
    x = 23,347,592,515.22/203,103.92
  6. Step 6: Final answer
    x = 114,953.92

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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.