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Finding the Fourth Proportional to 163,574.53, 225,708.39 and 91,940.90

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Solution

The fourth proportional to 163,574.53, 225,708.39 and 91,940.90 is: 126,864.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,574.53 : 225,708.39 = 91,940.90 : x
  2. Step 2: Convert to fraction form
    163,574.53/225,708.39 = 91,940.90/x
  3. Step 3: Cross multiply
    163,574.53x = 225,708.39 × 91,940.90
  4. Step 4: Simplify right side
    163,574.53x = 20,751,831,385.61
  5. Step 5: Solve for x
    x = 20,751,831,385.61/163,574.53
  6. Step 6: Final answer
    x = 126,864.69

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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.