Home / 209,739.78-289,441.02-114,246.90

Finding the Fourth Proportional to 209,739.78, 289,441.02 and 114,246.90

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Solution

The fourth proportional to 209,739.78, 289,441.02 and 114,246.90 is: 157,660.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,739.78 : 289,441.02 = 114,246.90 : x
  2. Step 2: Convert to fraction form
    209,739.78/289,441.02 = 114,246.90/x
  3. Step 3: Cross multiply
    209,739.78x = 289,441.02 × 114,246.90
  4. Step 4: Simplify right side
    209,739.78x = 33,067,739,267.84
  5. Step 5: Solve for x
    x = 33,067,739,267.84/209,739.78
  6. Step 6: Final answer
    x = 157,660.79

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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.