Home / 86,965.21-130,213.98-55,203.33

Finding the Fourth Proportional to 86,965.21, 130,213.98 and 55,203.33

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Solution

The fourth proportional to 86,965.21, 130,213.98 and 55,203.33 is: 82,656.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,965.21 : 130,213.98 = 55,203.33 : x
  2. Step 2: Convert to fraction form
    86,965.21/130,213.98 = 55,203.33/x
  3. Step 3: Cross multiply
    86,965.21x = 130,213.98 × 55,203.33
  4. Step 4: Simplify right side
    86,965.21x = 7,188,245,308.55
  5. Step 5: Solve for x
    x = 7,188,245,308.55/86,965.21
  6. Step 6: Final answer
    x = 82,656.56

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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.