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Finding the Fourth Proportional to 203,087.70, 280,271.39 and 112,453.67

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Solution

The fourth proportional to 203,087.70, 280,271.39 and 112,453.67 is: 155,191.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,087.70 : 280,271.39 = 112,453.67 : x
  2. Step 2: Convert to fraction form
    203,087.70/280,271.39 = 112,453.67/x
  3. Step 3: Cross multiply
    203,087.70x = 280,271.39 × 112,453.67
  4. Step 4: Simplify right side
    203,087.70x = 31,517,546,539.91
  5. Step 5: Solve for x
    x = 31,517,546,539.91/203,087.70
  6. Step 6: Final answer
    x = 155,191.80

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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.