Home / 192,858.45-266,141.75-107,978.55

Finding the Fourth Proportional to 192,858.45, 266,141.75 and 107,978.55

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Solution

The fourth proportional to 192,858.45, 266,141.75 and 107,978.55 is: 149,008.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,858.45 : 266,141.75 = 107,978.55 : x
  2. Step 2: Convert to fraction form
    192,858.45/266,141.75 = 107,978.55/x
  3. Step 3: Cross multiply
    192,858.45x = 266,141.75 × 107,978.55
  4. Step 4: Simplify right side
    192,858.45x = 28,737,599,719.57
  5. Step 5: Solve for x
    x = 28,737,599,719.57/192,858.45
  6. Step 6: Final answer
    x = 149,008.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.