Home / 189,839.54-284,961.78-81,822.38

Finding the Fourth Proportional to 189,839.54, 284,961.78 and 81,822.38

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Solution

The fourth proportional to 189,839.54, 284,961.78 and 81,822.38 is: 122,820.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,839.54 : 284,961.78 = 81,822.38 : x
  2. Step 2: Convert to fraction form
    189,839.54/284,961.78 = 81,822.38/x
  3. Step 3: Cross multiply
    189,839.54x = 284,961.78 × 81,822.38
  4. Step 4: Simplify right side
    189,839.54x = 23,316,251,048.64
  5. Step 5: Solve for x
    x = 23,316,251,048.64/189,839.54
  6. Step 6: Final answer
    x = 122,820.84

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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.