Home / 209,890.94-289,420.81-141,789.73

Finding the Fourth Proportional to 209,890.94, 289,420.81 and 141,789.73

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Solution

The fourth proportional to 209,890.94, 289,420.81 and 141,789.73 is: 195,515.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,890.94 : 289,420.81 = 141,789.73 : x
  2. Step 2: Convert to fraction form
    209,890.94/289,420.81 = 141,789.73/x
  3. Step 3: Cross multiply
    209,890.94x = 289,420.81 × 141,789.73
  4. Step 4: Simplify right side
    209,890.94x = 41,036,898,506.28
  5. Step 5: Solve for x
    x = 41,036,898,506.28/209,890.94
  6. Step 6: Final answer
    x = 195,515.34

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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.