Home / 203,021.39-280,163.20-116,980.55

Finding the Fourth Proportional to 203,021.39, 280,163.20 and 116,980.55

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Solution

The fourth proportional to 203,021.39, 280,163.20 and 116,980.55 is: 161,429.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,021.39 : 280,163.20 = 116,980.55 : x
  2. Step 2: Convert to fraction form
    203,021.39/280,163.20 = 116,980.55/x
  3. Step 3: Cross multiply
    203,021.39x = 280,163.20 × 116,980.55
  4. Step 4: Simplify right side
    203,021.39x = 32,773,643,240.04
  5. Step 5: Solve for x
    x = 32,773,643,240.04/203,021.39
  6. Step 6: Final answer
    x = 161,429.51

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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.