Home / 131,692.12-197,150.40-81,611.26

Finding the Fourth Proportional to 131,692.12, 197,150.40 and 81,611.26

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Solution

The fourth proportional to 131,692.12, 197,150.40 and 81,611.26 is: 122,176.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,692.12 : 197,150.40 = 81,611.26 : x
  2. Step 2: Convert to fraction form
    131,692.12/197,150.40 = 81,611.26/x
  3. Step 3: Cross multiply
    131,692.12x = 197,150.40 × 81,611.26
  4. Step 4: Simplify right side
    131,692.12x = 16,089,692,553.50
  5. Step 5: Solve for x
    x = 16,089,692,553.50/131,692.12
  6. Step 6: Final answer
    x = 122,176.58

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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.