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Finding the Fourth Proportional to 163,517.92, 225,653.78 and 91,897.32

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Solution

The fourth proportional to 163,517.92, 225,653.78 and 91,897.32 is: 126,817.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,517.92 : 225,653.78 = 91,897.32 : x
  2. Step 2: Convert to fraction form
    163,517.92/225,653.78 = 91,897.32/x
  3. Step 3: Cross multiply
    163,517.92x = 225,653.78 × 91,897.32
  4. Step 4: Simplify right side
    163,517.92x = 20,736,977,629.87
  5. Step 5: Solve for x
    x = 20,736,977,629.87/163,517.92
  6. Step 6: Final answer
    x = 126,817.77

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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.