Home / 128,884.84-193,249.59-57,794.61

Finding the Fourth Proportional to 128,884.84, 193,249.59 and 57,794.61

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Solution

The fourth proportional to 128,884.84, 193,249.59 and 57,794.61 is: 86,657.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,884.84 : 193,249.59 = 57,794.61 : x
  2. Step 2: Convert to fraction form
    128,884.84/193,249.59 = 57,794.61/x
  3. Step 3: Cross multiply
    128,884.84x = 193,249.59 × 57,794.61
  4. Step 4: Simplify right side
    128,884.84x = 11,168,783,720.46
  5. Step 5: Solve for x
    x = 11,168,783,720.46/128,884.84
  6. Step 6: Final answer
    x = 86,657.08

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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.