Home / 128,678.22-193,053.78-53,834.22

Finding the Fourth Proportional to 128,678.22, 193,053.78 and 53,834.22

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Solution

The fourth proportional to 128,678.22, 193,053.78 and 53,834.22 is: 80,766.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,678.22 : 193,053.78 = 53,834.22 : x
  2. Step 2: Convert to fraction form
    128,678.22/193,053.78 = 53,834.22/x
  3. Step 3: Cross multiply
    128,678.22x = 193,053.78 × 53,834.22
  4. Step 4: Simplify right side
    128,678.22x = 10,392,899,664.35
  5. Step 5: Solve for x
    x = 10,392,899,664.35/128,678.22
  6. Step 6: Final answer
    x = 80,766.58

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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.