Home / 196,311.04-270,840.20-128,367.76

Finding the Fourth Proportional to 196,311.04, 270,840.20 and 128,367.76

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Solution

The fourth proportional to 196,311.04, 270,840.20 and 128,367.76 is: 177,102.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,311.04 : 270,840.20 = 128,367.76 : x
  2. Step 2: Convert to fraction form
    196,311.04/270,840.20 = 128,367.76/x
  3. Step 3: Cross multiply
    196,311.04x = 270,840.20 × 128,367.76
  4. Step 4: Simplify right side
    196,311.04x = 34,767,149,791.95
  5. Step 5: Solve for x
    x = 34,767,149,791.95/196,311.04
  6. Step 6: Final answer
    x = 177,102.37

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1.5x scale

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.