Home / 137,286.72-189,464.04-76,861.14

Finding the Fourth Proportional to 137,286.72, 189,464.04 and 76,861.14

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Solution

The fourth proportional to 137,286.72, 189,464.04 and 76,861.14 is: 106,073.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,286.72 : 189,464.04 = 76,861.14 : x
  2. Step 2: Convert to fraction form
    137,286.72/189,464.04 = 76,861.14/x
  3. Step 3: Cross multiply
    137,286.72x = 189,464.04 × 76,861.14
  4. Step 4: Simplify right side
    137,286.72x = 14,562,422,103.41
  5. Step 5: Solve for x
    x = 14,562,422,103.41/137,286.72
  6. Step 6: Final answer
    x = 106,073.06

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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.