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Finding the Fourth Proportional to 163,381.56, 225,458.20 and 91,764.60

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Solution

The fourth proportional to 163,381.56, 225,458.20 and 91,764.60 is: 126,630.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,381.56 : 225,458.20 = 91,764.60 : x
  2. Step 2: Convert to fraction form
    163,381.56/225,458.20 = 91,764.60/x
  3. Step 3: Cross multiply
    163,381.56x = 225,458.20 × 91,764.60
  4. Step 4: Simplify right side
    163,381.56x = 20,689,081,539.72
  5. Step 5: Solve for x
    x = 20,689,081,539.72/163,381.56
  6. Step 6: Final answer
    x = 126,630.46

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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.