Home / 190,809.78-263,338.47-109,145.58

Finding the Fourth Proportional to 190,809.78, 263,338.47 and 109,145.58

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Solution

The fourth proportional to 190,809.78, 263,338.47 and 109,145.58 is: 150,632.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,809.78 : 263,338.47 = 109,145.58 : x
  2. Step 2: Convert to fraction form
    190,809.78/263,338.47 = 109,145.58/x
  3. Step 3: Cross multiply
    190,809.78x = 263,338.47 × 109,145.58
  4. Step 4: Simplify right side
    190,809.78x = 28,742,230,044.46
  5. Step 5: Solve for x
    x = 28,742,230,044.46/190,809.78
  6. Step 6: Final answer
    x = 150,632.90

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1.5x scale

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.