Home / 139,921.53-193,086.09-76,257.96

Finding the Fourth Proportional to 139,921.53, 193,086.09 and 76,257.96

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Solution

The fourth proportional to 139,921.53, 193,086.09 and 76,257.96 is: 105,232.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,921.53 : 193,086.09 = 76,257.96 : x
  2. Step 2: Convert to fraction form
    139,921.53/193,086.09 = 76,257.96/x
  3. Step 3: Cross multiply
    139,921.53x = 193,086.09 × 76,257.96
  4. Step 4: Simplify right side
    139,921.53x = 14,724,351,327.78
  5. Step 5: Solve for x
    x = 14,724,351,327.78/139,921.53
  6. Step 6: Final answer
    x = 105,232.92

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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.