Home / 190,400.51-285,660.46-114,581.78

Finding the Fourth Proportional to 190,400.51, 285,660.46 and 114,581.78

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Solution

The fourth proportional to 190,400.51, 285,660.46 and 114,581.78 is: 171,908.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,400.51 : 285,660.46 = 114,581.78 : x
  2. Step 2: Convert to fraction form
    190,400.51/285,660.46 = 114,581.78/x
  3. Step 3: Cross multiply
    190,400.51x = 285,660.46 × 114,581.78
  4. Step 4: Simplify right side
    190,400.51x = 32,731,483,768.57
  5. Step 5: Solve for x
    x = 32,731,483,768.57/190,400.51
  6. Step 6: Final answer
    x = 171,908.59

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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.