Home / 188,720.85-260,441.95-108,163.92

Finding the Fourth Proportional to 188,720.85, 260,441.95 and 108,163.92

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Solution

The fourth proportional to 188,720.85, 260,441.95 and 108,163.92 is: 149,270.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,720.85 : 260,441.95 = 108,163.92 : x
  2. Step 2: Convert to fraction form
    188,720.85/260,441.95 = 108,163.92/x
  3. Step 3: Cross multiply
    188,720.85x = 260,441.95 × 108,163.92
  4. Step 4: Simplify right side
    188,720.85x = 28,170,421,974.03
  5. Step 5: Solve for x
    x = 28,170,421,974.03/188,720.85
  6. Step 6: Final answer
    x = 149,270.32

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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.