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Finding the Fourth Proportional to 102,866.87, 154,060.37 and 100,028.60

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Solution

The fourth proportional to 102,866.87, 154,060.37 and 100,028.60 is: 149,809.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,866.87 : 154,060.37 = 100,028.60 : x
  2. Step 2: Convert to fraction form
    102,866.87/154,060.37 = 100,028.60/x
  3. Step 3: Cross multiply
    102,866.87x = 154,060.37 × 100,028.60
  4. Step 4: Simplify right side
    102,866.87x = 15,410,443,126.58
  5. Step 5: Solve for x
    x = 15,410,443,126.58/102,866.87
  6. Step 6: Final answer
    x = 149,809.59

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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.