Home / 189,786.87-261,883.40-104,889.15

Finding the Fourth Proportional to 189,786.87, 261,883.40 and 104,889.15

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Solution

The fourth proportional to 189,786.87, 261,883.40 and 104,889.15 is: 144,734.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,786.87 : 261,883.40 = 104,889.15 : x
  2. Step 2: Convert to fraction form
    189,786.87/261,883.40 = 104,889.15/x
  3. Step 3: Cross multiply
    189,786.87x = 261,883.40 × 104,889.15
  4. Step 4: Simplify right side
    189,786.87x = 27,468,726,700.66
  5. Step 5: Solve for x
    x = 27,468,726,700.66/189,786.87
  6. Step 6: Final answer
    x = 144,734.60

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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.