Home / 128,271.05-191,467.23-113,120.90

Finding the Fourth Proportional to 128,271.05, 191,467.23 and 113,120.90

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Solution

The fourth proportional to 128,271.05, 191,467.23 and 113,120.90 is: 168,852.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,271.05 : 191,467.23 = 113,120.90 : x
  2. Step 2: Convert to fraction form
    128,271.05/191,467.23 = 113,120.90/x
  3. Step 3: Cross multiply
    128,271.05x = 191,467.23 × 113,120.90
  4. Step 4: Simplify right side
    128,271.05x = 21,658,945,378.11
  5. Step 5: Solve for x
    x = 21,658,945,378.11/128,271.05
  6. Step 6: Final answer
    x = 168,852.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.