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Finding the Fourth Proportional to 251,002.73, 376,653.65 and 91,091.12

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Solution

The fourth proportional to 251,002.73, 376,653.65 and 91,091.12 is: 136,690.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,002.73 : 376,653.65 = 91,091.12 : x
  2. Step 2: Convert to fraction form
    251,002.73/376,653.65 = 91,091.12/x
  3. Step 3: Cross multiply
    251,002.73x = 376,653.65 × 91,091.12
  4. Step 4: Simplify right side
    251,002.73x = 34,309,800,491.86
  5. Step 5: Solve for x
    x = 34,309,800,491.86/251,002.73
  6. Step 6: Final answer
    x = 136,690.94

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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.