Home / 190,553.16-262,976.64-105,678.12

Finding the Fourth Proportional to 190,553.16, 262,976.64 and 105,678.12

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Solution

The fourth proportional to 190,553.16, 262,976.64 and 105,678.12 is: 145,843.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,553.16 : 262,976.64 = 105,678.12 : x
  2. Step 2: Convert to fraction form
    190,553.16/262,976.64 = 105,678.12/x
  3. Step 3: Cross multiply
    190,553.16x = 262,976.64 × 105,678.12
  4. Step 4: Simplify right side
    190,553.16x = 27,790,876,919.12
  5. Step 5: Solve for x
    x = 27,790,876,919.12/190,553.16
  6. Step 6: Final answer
    x = 145,843.17

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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.