Home / 203,543.40-280,923.51-112,928.55

Finding the Fourth Proportional to 203,543.40, 280,923.51 and 112,928.55

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Solution

The fourth proportional to 203,543.40, 280,923.51 and 112,928.55 is: 155,860.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,543.40 : 280,923.51 = 112,928.55 : x
  2. Step 2: Convert to fraction form
    203,543.40/280,923.51 = 112,928.55/x
  3. Step 3: Cross multiply
    203,543.40x = 280,923.51 × 112,928.55
  4. Step 4: Simplify right side
    203,543.40x = 31,724,284,645.21
  5. Step 5: Solve for x
    x = 31,724,284,645.21/203,543.40
  6. Step 6: Final answer
    x = 155,860.05

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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.