Home / 128,303.06-192,311.22-53,398.32

Finding the Fourth Proportional to 128,303.06, 192,311.22 and 53,398.32

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Solution

The fourth proportional to 128,303.06, 192,311.22 and 53,398.32 is: 80,037.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,303.06 : 192,311.22 = 53,398.32 : x
  2. Step 2: Convert to fraction form
    128,303.06/192,311.22 = 53,398.32/x
  3. Step 3: Cross multiply
    128,303.06x = 192,311.22 × 53,398.32
  4. Step 4: Simplify right side
    128,303.06x = 10,269,096,065.15
  5. Step 5: Solve for x
    x = 10,269,096,065.15/128,303.06
  6. Step 6: Final answer
    x = 80,037.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.