Home / 135,745.12-187,323.66-82,020.64

Finding the Fourth Proportional to 135,745.12, 187,323.66 and 82,020.64

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Solution

The fourth proportional to 135,745.12, 187,323.66 and 82,020.64 is: 113,185.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,745.12 : 187,323.66 = 82,020.64 : x
  2. Step 2: Convert to fraction form
    135,745.12/187,323.66 = 82,020.64/x
  3. Step 3: Cross multiply
    135,745.12x = 187,323.66 × 82,020.64
  4. Step 4: Simplify right side
    135,745.12x = 15,364,406,480.34
  5. Step 5: Solve for x
    x = 15,364,406,480.34/135,745.12
  6. Step 6: Final answer
    x = 113,185.70

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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.