Home / 201,811.80-278,487.75-111,162.70

Finding the Fourth Proportional to 201,811.80, 278,487.75 and 111,162.70

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Solution

The fourth proportional to 201,811.80, 278,487.75 and 111,162.70 is: 153,397.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,811.80 : 278,487.75 = 111,162.70 : x
  2. Step 2: Convert to fraction form
    201,811.80/278,487.75 = 111,162.70/x
  3. Step 3: Cross multiply
    201,811.80x = 278,487.75 × 111,162.70
  4. Step 4: Simplify right side
    201,811.80x = 30,957,450,206.93
  5. Step 5: Solve for x
    x = 30,957,450,206.93/201,811.80
  6. Step 6: Final answer
    x = 153,397.62

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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.