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Finding the Fourth Proportional to 163,607.85, 225,773.06 and 91,991.97

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Solution

The fourth proportional to 163,607.85, 225,773.06 and 91,991.97 is: 126,945.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,607.85 : 225,773.06 = 91,991.97 : x
  2. Step 2: Convert to fraction form
    163,607.85/225,773.06 = 91,991.97/x
  3. Step 3: Cross multiply
    163,607.85x = 225,773.06 × 91,991.97
  4. Step 4: Simplify right side
    163,607.85x = 20,769,308,102.37
  5. Step 5: Solve for x
    x = 20,769,308,102.37/163,607.85
  6. Step 6: Final answer
    x = 126,945.67

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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.