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Finding the Fourth Proportional to 117,858.78, 162,662.26 and 66,181.68

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Solution

The fourth proportional to 117,858.78, 162,662.26 and 66,181.68 is: 91,340.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,858.78 : 162,662.26 = 66,181.68 : x
  2. Step 2: Convert to fraction form
    117,858.78/162,662.26 = 66,181.68/x
  3. Step 3: Cross multiply
    117,858.78x = 162,662.26 × 66,181.68
  4. Step 4: Simplify right side
    117,858.78x = 10,765,261,639.40
  5. Step 5: Solve for x
    x = 10,765,261,639.40/117,858.78
  6. Step 6: Final answer
    x = 91,340.35

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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.