Home / 189,722.39-261,816.99-104,839.45

Finding the Fourth Proportional to 189,722.39, 261,816.99 and 104,839.45

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Solution

The fourth proportional to 189,722.39, 261,816.99 and 104,839.45 is: 144,678.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,722.39 : 261,816.99 = 104,839.45 : x
  2. Step 2: Convert to fraction form
    189,722.39/261,816.99 = 104,839.45/x
  3. Step 3: Cross multiply
    189,722.39x = 261,816.99 × 104,839.45
  4. Step 4: Simplify right side
    189,722.39x = 27,448,749,232.26
  5. Step 5: Solve for x
    x = 27,448,749,232.26/189,722.39
  6. Step 6: Final answer
    x = 144,678.49

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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.