Home / 203,289.78-280,546.05-112,637.26

Finding the Fourth Proportional to 203,289.78, 280,546.05 and 112,637.26

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Solution

The fourth proportional to 203,289.78, 280,546.05 and 112,637.26 is: 155,442.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,289.78 : 280,546.05 = 112,637.26 : x
  2. Step 2: Convert to fraction form
    203,289.78/280,546.05 = 112,637.26/x
  3. Step 3: Cross multiply
    203,289.78x = 280,546.05 × 112,637.26
  4. Step 4: Simplify right side
    203,289.78x = 31,599,938,830.14
  5. Step 5: Solve for x
    x = 31,599,938,830.14/203,289.78
  6. Step 6: Final answer
    x = 155,442.83

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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.