Home / 203,015.22-280,153.85-112,371.36

Finding the Fourth Proportional to 203,015.22, 280,153.85 and 112,371.36

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Solution

The fourth proportional to 203,015.22, 280,153.85 and 112,371.36 is: 155,068.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,015.22 : 280,153.85 = 112,371.36 : x
  2. Step 2: Convert to fraction form
    203,015.22/280,153.85 = 112,371.36/x
  3. Step 3: Cross multiply
    203,015.22x = 280,153.85 × 112,371.36
  4. Step 4: Simplify right side
    203,015.22x = 31,481,269,133.74
  5. Step 5: Solve for x
    x = 31,481,269,133.74/203,015.22
  6. Step 6: Final answer
    x = 155,068.52

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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.