Home / 135,692.45-187,231.37-81,941.48

Finding the Fourth Proportional to 135,692.45, 187,231.37 and 81,941.48

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Solution

The fourth proportional to 135,692.45, 187,231.37 and 81,941.48 is: 113,064.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,692.45 : 187,231.37 = 81,941.48 : x
  2. Step 2: Convert to fraction form
    135,692.45/187,231.37 = 81,941.48/x
  3. Step 3: Cross multiply
    135,692.45x = 187,231.37 × 81,941.48
  4. Step 4: Simplify right side
    135,692.45x = 15,342,014,214.36
  5. Step 5: Solve for x
    x = 15,342,014,214.36/135,692.45
  6. Step 6: Final answer
    x = 113,064.62

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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.