Home / 209,514.09-289,116.80-117,626.61

Finding the Fourth Proportional to 209,514.09, 289,116.80 and 117,626.61

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Solution

The fourth proportional to 209,514.09, 289,116.80 and 117,626.61 is: 162,317.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,514.09 : 289,116.80 = 117,626.61 : x
  2. Step 2: Convert to fraction form
    209,514.09/289,116.80 = 117,626.61/x
  3. Step 3: Cross multiply
    209,514.09x = 289,116.80 × 117,626.61
  4. Step 4: Simplify right side
    209,514.09x = 34,007,828,489.92
  5. Step 5: Solve for x
    x = 34,007,828,489.92/209,514.09
  6. Step 6: Final answer
    x = 162,317.62

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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.