Home / 203,436.26-280,741.54-112,789.91

Finding the Fourth Proportional to 203,436.26, 280,741.54 and 112,789.91

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Solution

The fourth proportional to 203,436.26, 280,741.54 and 112,789.91 is: 155,649.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,436.26 : 280,741.54 = 112,789.91 : x
  2. Step 2: Convert to fraction form
    203,436.26/280,741.54 = 112,789.91/x
  3. Step 3: Cross multiply
    203,436.26x = 280,741.54 × 112,789.91
  4. Step 4: Simplify right side
    203,436.26x = 31,664,813,029.86
  5. Step 5: Solve for x
    x = 31,664,813,029.86/203,436.26
  6. Step 6: Final answer
    x = 155,649.80

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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.