Home / 209,109.28-288,571.12-113,615.94

Finding the Fourth Proportional to 209,109.28, 288,571.12 and 113,615.94

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Solution

The fourth proportional to 209,109.28, 288,571.12 and 113,615.94 is: 156,790.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,109.28 : 288,571.12 = 113,615.94 : x
  2. Step 2: Convert to fraction form
    209,109.28/288,571.12 = 113,615.94/x
  3. Step 3: Cross multiply
    209,109.28x = 288,571.12 × 113,615.94
  4. Step 4: Simplify right side
    209,109.28x = 32,786,279,055.65
  5. Step 5: Solve for x
    x = 32,786,279,055.65/209,109.28
  6. Step 6: Final answer
    x = 156,790.17

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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.