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Finding the Fourth Proportional to 108,471.87, 149,586.03 and 84,589.83

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Solution

The fourth proportional to 108,471.87, 149,586.03 and 84,589.83 is: 116,651.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,471.87 : 149,586.03 = 84,589.83 : x
  2. Step 2: Convert to fraction form
    108,471.87/149,586.03 = 84,589.83/x
  3. Step 3: Cross multiply
    108,471.87x = 149,586.03 × 84,589.83
  4. Step 4: Simplify right side
    108,471.87x = 12,653,456,848.07
  5. Step 5: Solve for x
    x = 12,653,456,848.07/108,471.87
  6. Step 6: Final answer
    x = 116,651.97

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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.