Home / 205,168.75-283,137.65-128,691.07

Finding the Fourth Proportional to 205,168.75, 283,137.65 and 128,691.07

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Solution

The fourth proportional to 205,168.75, 283,137.65 and 128,691.07 is: 177,596.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,168.75 : 283,137.65 = 128,691.07 : x
  2. Step 2: Convert to fraction form
    205,168.75/283,137.65 = 128,691.07/x
  3. Step 3: Cross multiply
    205,168.75x = 283,137.65 × 128,691.07
  4. Step 4: Simplify right side
    205,168.75x = 36,437,286,271.60
  5. Step 5: Solve for x
    x = 36,437,286,271.60/205,168.75
  6. Step 6: Final answer
    x = 177,596.67

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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.