Home / 209,546.61-289,180.58-129,020.59

Finding the Fourth Proportional to 209,546.61, 289,180.58 and 129,020.59

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Solution

The fourth proportional to 209,546.61, 289,180.58 and 129,020.59 is: 178,052.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,546.61 : 289,180.58 = 129,020.59 : x
  2. Step 2: Convert to fraction form
    209,546.61/289,180.58 = 129,020.59/x
  3. Step 3: Cross multiply
    209,546.61x = 289,180.58 × 129,020.59
  4. Step 4: Simplify right side
    209,546.61x = 37,310,249,048.14
  5. Step 5: Solve for x
    x = 37,310,249,048.14/209,546.61
  6. Step 6: Final answer
    x = 178,052.27

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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.