Home / 254,172.09-381,260.87-76,680.64

Finding the Fourth Proportional to 254,172.09, 381,260.87 and 76,680.64

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Solution

The fourth proportional to 254,172.09, 381,260.87 and 76,680.64 is: 115,021.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,172.09 : 381,260.87 = 76,680.64 : x
  2. Step 2: Convert to fraction form
    254,172.09/381,260.87 = 76,680.64/x
  3. Step 3: Cross multiply
    254,172.09x = 381,260.87 × 76,680.64
  4. Step 4: Simplify right side
    254,172.09x = 29,235,327,518.56
  5. Step 5: Solve for x
    x = 29,235,327,518.56/254,172.09
  6. Step 6: Final answer
    x = 115,021.79

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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.