Home / 209,550.67-289,235.54-129,045.69

Finding the Fourth Proportional to 209,550.67, 289,235.54 and 129,045.69

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Solution

The fourth proportional to 209,550.67, 289,235.54 and 129,045.69 is: 178,117.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,550.67 : 289,235.54 = 129,045.69 : x
  2. Step 2: Convert to fraction form
    209,550.67/289,235.54 = 129,045.69/x
  3. Step 3: Cross multiply
    209,550.67x = 289,235.54 × 129,045.69
  4. Step 4: Simplify right side
    209,550.67x = 37,324,600,154.44
  5. Step 5: Solve for x
    x = 37,324,600,154.44/209,550.67
  6. Step 6: Final answer
    x = 178,117.30

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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.