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Finding the Fourth Proportional to 103,081.30, 154,359.44 and 67,914.34

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Solution

The fourth proportional to 103,081.30, 154,359.44 and 67,914.34 is: 101,698.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,081.30 : 154,359.44 = 67,914.34 : x
  2. Step 2: Convert to fraction form
    103,081.30/154,359.44 = 67,914.34/x
  3. Step 3: Cross multiply
    103,081.30x = 154,359.44 × 67,914.34
  4. Step 4: Simplify right side
    103,081.30x = 10,483,219,490.37
  5. Step 5: Solve for x
    x = 10,483,219,490.37/103,081.30
  6. Step 6: Final answer
    x = 101,698.56

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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.