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Finding the Fourth Proportional to 203,015.46, 280,161.87 and 112,377.68

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Solution

The fourth proportional to 203,015.46, 280,161.87 and 112,377.68 is: 155,081.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,015.46 : 280,161.87 = 112,377.68 : x
  2. Step 2: Convert to fraction form
    203,015.46/280,161.87 = 112,377.68/x
  3. Step 3: Cross multiply
    203,015.46x = 280,161.87 × 112,377.68
  4. Step 4: Simplify right side
    203,015.46x = 31,483,940,835.57
  5. Step 5: Solve for x
    x = 31,483,940,835.57/203,015.46
  6. Step 6: Final answer
    x = 155,081.49

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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.