Home / 203,014.20-280,177.80-112,391.40

Finding the Fourth Proportional to 203,014.20, 280,177.80 and 112,391.40

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Solution

The fourth proportional to 203,014.20, 280,177.80 and 112,391.40 is: 155,110.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,014.20 : 280,177.80 = 112,391.40 : x
  2. Step 2: Convert to fraction form
    203,014.20/280,177.80 = 112,391.40/x
  3. Step 3: Cross multiply
    203,014.20x = 280,177.80 × 112,391.40
  4. Step 4: Simplify right side
    203,014.20x = 31,489,575,190.92
  5. Step 5: Solve for x
    x = 31,489,575,190.92/203,014.20
  6. Step 6: Final answer
    x = 155,110.21

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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.