Home / 131,692.37-197,150.78-81,611.51

Finding the Fourth Proportional to 131,692.37, 197,150.78 and 81,611.51

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Solution

The fourth proportional to 131,692.37, 197,150.78 and 81,611.51 is: 122,176.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,692.37 : 197,150.78 = 81,611.51 : x
  2. Step 2: Convert to fraction form
    131,692.37/197,150.78 = 81,611.51/x
  3. Step 3: Cross multiply
    131,692.37x = 197,150.78 × 81,611.51
  4. Step 4: Simplify right side
    131,692.37x = 16,089,772,445.42
  5. Step 5: Solve for x
    x = 16,089,772,445.42/131,692.37
  6. Step 6: Final answer
    x = 122,176.95

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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.