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Finding the Fourth Proportional to 192,687.68, 289,075.44 and 103,939.22

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Solution

The fourth proportional to 192,687.68, 289,075.44 and 103,939.22 is: 155,932.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,687.68 : 289,075.44 = 103,939.22 : x
  2. Step 2: Convert to fraction form
    192,687.68/289,075.44 = 103,939.22/x
  3. Step 3: Cross multiply
    192,687.68x = 289,075.44 × 103,939.22
  4. Step 4: Simplify right side
    192,687.68x = 30,046,275,754.76
  5. Step 5: Solve for x
    x = 30,046,275,754.76/192,687.68
  6. Step 6: Final answer
    x = 155,932.52

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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.