Home / 133,485.12-184,135.68-85,745.52

Finding the Fourth Proportional to 133,485.12, 184,135.68 and 85,745.52

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Solution

The fourth proportional to 133,485.12, 184,135.68 and 85,745.52 is: 118,281.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,485.12 : 184,135.68 = 85,745.52 : x
  2. Step 2: Convert to fraction form
    133,485.12/184,135.68 = 85,745.52/x
  3. Step 3: Cross multiply
    133,485.12x = 184,135.68 × 85,745.52
  4. Step 4: Simplify right side
    133,485.12x = 15,788,809,632.15
  5. Step 5: Solve for x
    x = 15,788,809,632.15/133,485.12
  6. Step 6: Final answer
    x = 118,281.42

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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.