Home / 135,848.22-203,485.05-85,902.54

Finding the Fourth Proportional to 135,848.22, 203,485.05 and 85,902.54

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Solution

The fourth proportional to 135,848.22, 203,485.05 and 85,902.54 is: 128,672.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,848.22 : 203,485.05 = 85,902.54 : x
  2. Step 2: Convert to fraction form
    135,848.22/203,485.05 = 85,902.54/x
  3. Step 3: Cross multiply
    135,848.22x = 203,485.05 × 85,902.54
  4. Step 4: Simplify right side
    135,848.22x = 17,479,882,647.03
  5. Step 5: Solve for x
    x = 17,479,882,647.03/135,848.22
  6. Step 6: Final answer
    x = 128,672.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.