Home / 203,157.63-280,336.19-112,511.21

Finding the Fourth Proportional to 203,157.63, 280,336.19 and 112,511.21

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Solution

The fourth proportional to 203,157.63, 280,336.19 and 112,511.21 is: 155,253.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,157.63 : 280,336.19 = 112,511.21 : x
  2. Step 2: Convert to fraction form
    203,157.63/280,336.19 = 112,511.21/x
  3. Step 3: Cross multiply
    203,157.63x = 280,336.19 × 112,511.21
  4. Step 4: Simplify right side
    203,157.63x = 31,540,961,979.45
  5. Step 5: Solve for x
    x = 31,540,961,979.45/203,157.63
  6. Step 6: Final answer
    x = 155,253.64

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1.5x scale

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.