Home / 505,747.75-758,621.64-131,770.75

Finding the Fourth Proportional to 505,747.75, 758,621.64 and 131,770.75

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Solution

The fourth proportional to 505,747.75, 758,621.64 and 131,770.75 is: 197,656.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,747.75 : 758,621.64 = 131,770.75 : x
  2. Step 2: Convert to fraction form
    505,747.75/758,621.64 = 131,770.75/x
  3. Step 3: Cross multiply
    505,747.75x = 758,621.64 × 131,770.75
  4. Step 4: Simplify right side
    505,747.75x = 99,964,142,469.03
  5. Step 5: Solve for x
    x = 99,964,142,469.03/505,747.75
  6. Step 6: Final answer
    x = 197,656.13

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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.