Home / 186,137.36-279,040.80-67,786.64

Finding the Fourth Proportional to 186,137.36, 279,040.80 and 67,786.64

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Solution

The fourth proportional to 186,137.36, 279,040.80 and 67,786.64 is: 101,619.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,137.36 : 279,040.80 = 67,786.64 : x
  2. Step 2: Convert to fraction form
    186,137.36/279,040.80 = 67,786.64/x
  3. Step 3: Cross multiply
    186,137.36x = 279,040.80 × 67,786.64
  4. Step 4: Simplify right side
    186,137.36x = 18,915,238,254.91
  5. Step 5: Solve for x
    x = 18,915,238,254.91/186,137.36
  6. Step 6: Final answer
    x = 101,619.78

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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.