Home / 143,936.20-215,904.30-133,438.60

Finding the Fourth Proportional to 143,936.20, 215,904.30 and 133,438.60

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Solution

The fourth proportional to 143,936.20, 215,904.30 and 133,438.60 is: 200,157.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,936.20 : 215,904.30 = 133,438.60 : x
  2. Step 2: Convert to fraction form
    143,936.20/215,904.30 = 133,438.60/x
  3. Step 3: Cross multiply
    143,936.20x = 215,904.30 × 133,438.60
  4. Step 4: Simplify right side
    143,936.20x = 28,809,967,525.98
  5. Step 5: Solve for x
    x = 28,809,967,525.98/143,936.20
  6. Step 6: Final answer
    x = 200,157.90

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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.