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Finding the Fourth Proportional to 194,681.87, 268,660.48 and 108,639.94

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Solution

The fourth proportional to 194,681.87, 268,660.48 and 108,639.94 is: 149,922.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,681.87 : 268,660.48 = 108,639.94 : x
  2. Step 2: Convert to fraction form
    194,681.87/268,660.48 = 108,639.94/x
  3. Step 3: Cross multiply
    194,681.87x = 268,660.48 × 108,639.94
  4. Step 4: Simplify right side
    194,681.87x = 29,187,257,484.32
  5. Step 5: Solve for x
    x = 29,187,257,484.32/194,681.87
  6. Step 6: Final answer
    x = 149,922.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.