Home / 148,114.20-222,171.30-85,128.60

Finding the Fourth Proportional to 148,114.20, 222,171.30 and 85,128.60

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Solution

The fourth proportional to 148,114.20, 222,171.30 and 85,128.60 is: 127,692.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,114.20 : 222,171.30 = 85,128.60 : x
  2. Step 2: Convert to fraction form
    148,114.20/222,171.30 = 85,128.60/x
  3. Step 3: Cross multiply
    148,114.20x = 222,171.30 × 85,128.60
  4. Step 4: Simplify right side
    148,114.20x = 18,913,131,729.18
  5. Step 5: Solve for x
    x = 18,913,131,729.18/148,114.20
  6. Step 6: Final answer
    x = 127,692.90

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1.5x scale

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.