Home / 203,515.29-280,860.47-112,865.85

Finding the Fourth Proportional to 203,515.29, 280,860.47 and 112,865.85

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Solution

The fourth proportional to 203,515.29, 280,860.47 and 112,865.85 is: 155,760.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,515.29 : 280,860.47 = 112,865.85 : x
  2. Step 2: Convert to fraction form
    203,515.29/280,860.47 = 112,865.85/x
  3. Step 3: Cross multiply
    203,515.29x = 280,860.47 × 112,865.85
  4. Step 4: Simplify right side
    203,515.29x = 31,699,555,113.62
  5. Step 5: Solve for x
    x = 31,699,555,113.62/203,515.29
  6. Step 6: Final answer
    x = 155,760.07

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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.