Home / 203,015.97-280,162.56-112,378.18

Finding the Fourth Proportional to 203,015.97, 280,162.56 and 112,378.18

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Solution

The fourth proportional to 203,015.97, 280,162.56 and 112,378.18 is: 155,082.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,015.97 : 280,162.56 = 112,378.18 : x
  2. Step 2: Convert to fraction form
    203,015.97/280,162.56 = 112,378.18/x
  3. Step 3: Cross multiply
    203,015.97x = 280,162.56 × 112,378.18
  4. Step 4: Simplify right side
    203,015.97x = 31,484,158,596.94
  5. Step 5: Solve for x
    x = 31,484,158,596.94/203,015.97
  6. Step 6: Final answer
    x = 155,082.18

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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.