Home / 188,660.77-260,388.81-108,142.20

Finding the Fourth Proportional to 188,660.77, 260,388.81 and 108,142.20

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Solution

The fourth proportional to 188,660.77, 260,388.81 and 108,142.20 is: 149,257.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,660.77 : 260,388.81 = 108,142.20 : x
  2. Step 2: Convert to fraction form
    188,660.77/260,388.81 = 108,142.20/x
  3. Step 3: Cross multiply
    188,660.77x = 260,388.81 × 108,142.20
  4. Step 4: Simplify right side
    188,660.77x = 28,159,018,768.78
  5. Step 5: Solve for x
    x = 28,159,018,768.78/188,660.77
  6. Step 6: Final answer
    x = 149,257.42

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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.