Home / 203,418.16-280,723.68-112,782.56

Finding the Fourth Proportional to 203,418.16, 280,723.68 and 112,782.56

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Solution

The fourth proportional to 203,418.16, 280,723.68 and 112,782.56 is: 155,643.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,418.16 : 280,723.68 = 112,782.56 : x
  2. Step 2: Convert to fraction form
    203,418.16/280,723.68 = 112,782.56/x
  3. Step 3: Cross multiply
    203,418.16x = 280,723.68 × 112,782.56
  4. Step 4: Simplify right side
    203,418.16x = 31,660,733,879.40
  5. Step 5: Solve for x
    x = 31,660,733,879.40/203,418.16
  6. Step 6: Final answer
    x = 155,643.60

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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.