Home / 209,523.25-289,091.65-123,485.67

Finding the Fourth Proportional to 209,523.25, 289,091.65 and 123,485.67

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Solution

The fourth proportional to 209,523.25, 289,091.65 and 123,485.67 is: 170,380.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,523.25 : 289,091.65 = 123,485.67 : x
  2. Step 2: Convert to fraction form
    209,523.25/289,091.65 = 123,485.67/x
  3. Step 3: Cross multiply
    209,523.25x = 289,091.65 × 123,485.67
  4. Step 4: Simplify right side
    209,523.25x = 35,698,676,091.66
  5. Step 5: Solve for x
    x = 35,698,676,091.66/209,523.25
  6. Step 6: Final answer
    x = 170,380.50

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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.