Home / 189,839.87-261,903.67-109,224.01

Finding the Fourth Proportional to 189,839.87, 261,903.67 and 109,224.01

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Solution

The fourth proportional to 189,839.87, 261,903.67 and 109,224.01 is: 150,685.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,839.87 : 261,903.67 = 109,224.01 : x
  2. Step 2: Convert to fraction form
    189,839.87/261,903.67 = 109,224.01/x
  3. Step 3: Cross multiply
    189,839.87x = 261,903.67 × 109,224.01
  4. Step 4: Simplify right side
    189,839.87x = 28,606,169,071.12
  5. Step 5: Solve for x
    x = 28,606,169,071.12/189,839.87
  6. Step 6: Final answer
    x = 150,685.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.