Home / 128,976.84-193,236.35-53,931.56

Finding the Fourth Proportional to 128,976.84, 193,236.35 and 53,931.56

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Solution

The fourth proportional to 128,976.84, 193,236.35 and 53,931.56 is: 80,801.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,976.84 : 193,236.35 = 53,931.56 : x
  2. Step 2: Convert to fraction form
    128,976.84/193,236.35 = 53,931.56/x
  3. Step 3: Cross multiply
    128,976.84x = 193,236.35 × 53,931.56
  4. Step 4: Simplify right side
    128,976.84x = 10,421,536,568.37
  5. Step 5: Solve for x
    x = 10,421,536,568.37/128,976.84
  6. Step 6: Final answer
    x = 80,801.61

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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.