Home / 203,928.82-281,429.75-139,533.12

Finding the Fourth Proportional to 203,928.82, 281,429.75 and 139,533.12

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Solution

The fourth proportional to 203,928.82, 281,429.75 and 139,533.12 is: 192,561.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,928.82 : 281,429.75 = 139,533.12 : x
  2. Step 2: Convert to fraction form
    203,928.82/281,429.75 = 139,533.12/x
  3. Step 3: Cross multiply
    203,928.82x = 281,429.75 × 139,533.12
  4. Step 4: Simplify right side
    203,928.82x = 39,268,771,688.78
  5. Step 5: Solve for x
    x = 39,268,771,688.78/203,928.82
  6. Step 6: Final answer
    x = 192,561.17

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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.