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Finding the Fourth Proportional to 117,477.25, 162,111.21 and 66,500.33

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Solution

The fourth proportional to 117,477.25, 162,111.21 and 66,500.33 is: 91,766.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,477.25 : 162,111.21 = 66,500.33 : x
  2. Step 2: Convert to fraction form
    117,477.25/162,111.21 = 66,500.33/x
  3. Step 3: Cross multiply
    117,477.25x = 162,111.21 × 66,500.33
  4. Step 4: Simplify right side
    117,477.25x = 10,780,448,961.70
  5. Step 5: Solve for x
    x = 10,780,448,961.70/117,477.25
  6. Step 6: Final answer
    x = 91,766.27

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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.