Home / 128,316.06-192,338.76-53,360.73

Finding the Fourth Proportional to 128,316.06, 192,338.76 and 53,360.73

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Solution

The fourth proportional to 128,316.06, 192,338.76 and 53,360.73 is: 79,984.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,316.06 : 192,338.76 = 53,360.73 : x
  2. Step 2: Convert to fraction form
    128,316.06/192,338.76 = 53,360.73/x
  3. Step 3: Cross multiply
    128,316.06x = 192,338.76 × 53,360.73
  4. Step 4: Simplify right side
    128,316.06x = 10,263,336,640.89
  5. Step 5: Solve for x
    x = 10,263,336,640.89/128,316.06
  6. Step 6: Final answer
    x = 79,984.82

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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.