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Finding the Fourth Proportional to 102,896.79, 154,239.95 and 69,620.37

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Solution

The fourth proportional to 102,896.79, 154,239.95 and 69,620.37 is: 104,359.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,896.79 : 154,239.95 = 69,620.37 : x
  2. Step 2: Convert to fraction form
    102,896.79/154,239.95 = 69,620.37/x
  3. Step 3: Cross multiply
    102,896.79x = 154,239.95 × 69,620.37
  4. Step 4: Simplify right side
    102,896.79x = 10,738,242,039.68
  5. Step 5: Solve for x
    x = 10,738,242,039.68/102,896.79
  6. Step 6: Final answer
    x = 104,359.35

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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.