Home / 103,286.94-154,891.53-81,358.62

Finding the Fourth Proportional to 103,286.94, 154,891.53 and 81,358.62

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Solution

The fourth proportional to 103,286.94, 154,891.53 and 81,358.62 is: 122,007.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,286.94 : 154,891.53 = 81,358.62 : x
  2. Step 2: Convert to fraction form
    103,286.94/154,891.53 = 81,358.62/x
  3. Step 3: Cross multiply
    103,286.94x = 154,891.53 × 81,358.62
  4. Step 4: Simplify right side
    103,286.94x = 12,601,761,130.49
  5. Step 5: Solve for x
    x = 12,601,761,130.49/103,286.94
  6. Step 6: Final answer
    x = 122,007.30

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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.