Home / 203,128.87-280,317.39-117,087.28

Finding the Fourth Proportional to 203,128.87, 280,317.39 and 117,087.28

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Solution

The fourth proportional to 203,128.87, 280,317.39 and 117,087.28 is: 161,580.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,128.87 : 280,317.39 = 117,087.28 : x
  2. Step 2: Convert to fraction form
    203,128.87/280,317.39 = 117,087.28/x
  3. Step 3: Cross multiply
    203,128.87x = 280,317.39 × 117,087.28
  4. Step 4: Simplify right side
    203,128.87x = 32,821,600,731.80
  5. Step 5: Solve for x
    x = 32,821,600,731.80/203,128.87
  6. Step 6: Final answer
    x = 161,580.19

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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.