Home / 189,815.20-261,940.41-103,774.74

Finding the Fourth Proportional to 189,815.20, 261,940.41 and 103,774.74

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Solution

The fourth proportional to 189,815.20, 261,940.41 and 103,774.74 is: 143,206.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,815.20 : 261,940.41 = 103,774.74 : x
  2. Step 2: Convert to fraction form
    189,815.20/261,940.41 = 103,774.74/x
  3. Step 3: Cross multiply
    189,815.20x = 261,940.41 × 103,774.74
  4. Step 4: Simplify right side
    189,815.20x = 27,182,798,879.22
  5. Step 5: Solve for x
    x = 27,182,798,879.22/189,815.20
  6. Step 6: Final answer
    x = 143,206.65

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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.