Home / 203,189.21-280,538.12-126,824.63

Finding the Fourth Proportional to 203,189.21, 280,538.12 and 126,824.63

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Solution

The fourth proportional to 203,189.21, 280,538.12 and 126,824.63 is: 175,103.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,189.21 : 280,538.12 = 126,824.63 : x
  2. Step 2: Convert to fraction form
    203,189.21/280,538.12 = 126,824.63/x
  3. Step 3: Cross multiply
    203,189.21x = 280,538.12 × 126,824.63
  4. Step 4: Simplify right side
    203,189.21x = 35,579,142,635.77
  5. Step 5: Solve for x
    x = 35,579,142,635.77/203,189.21
  6. Step 6: Final answer
    x = 175,103.51

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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.