Home / 203,515.63-280,855.07-112,875.55

Finding the Fourth Proportional to 203,515.63, 280,855.07 and 112,875.55

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Solution

The fourth proportional to 203,515.63, 280,855.07 and 112,875.55 is: 155,770.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,515.63 : 280,855.07 = 112,875.55 : x
  2. Step 2: Convert to fraction form
    203,515.63/280,855.07 = 112,875.55/x
  3. Step 3: Cross multiply
    203,515.63x = 280,855.07 × 112,875.55
  4. Step 4: Simplify right side
    203,515.63x = 31,701,670,496.54
  5. Step 5: Solve for x
    x = 31,701,670,496.54/203,515.63
  6. Step 6: Final answer
    x = 155,770.20

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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.