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Finding the Fourth Proportional to 163,112.64, 225,091.86 and 91,491.12

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Solution

The fourth proportional to 163,112.64, 225,091.86 and 91,491.12 is: 126,255.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,112.64 : 225,091.86 = 91,491.12 : x
  2. Step 2: Convert to fraction form
    163,112.64/225,091.86 = 91,491.12/x
  3. Step 3: Cross multiply
    163,112.64x = 225,091.86 × 91,491.12
  4. Step 4: Simplify right side
    163,112.64x = 20,593,906,374.28
  5. Step 5: Solve for x
    x = 20,593,906,374.28/163,112.64
  6. Step 6: Final answer
    x = 126,255.74

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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.