Home / 203,985.35-281,409.21-135,936.03

Finding the Fourth Proportional to 203,985.35, 281,409.21 and 135,936.03

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Solution

The fourth proportional to 203,985.35, 281,409.21 and 135,936.03 is: 187,531.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,985.35 : 281,409.21 = 135,936.03 : x
  2. Step 2: Convert to fraction form
    203,985.35/281,409.21 = 135,936.03/x
  3. Step 3: Cross multiply
    203,985.35x = 281,409.21 × 135,936.03
  4. Step 4: Simplify right side
    203,985.35x = 38,253,650,812.84
  5. Step 5: Solve for x
    x = 38,253,650,812.84/203,985.35
  6. Step 6: Final answer
    x = 187,531.36

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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.