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Finding the Fourth Proportional to 117,857.79, 162,660.88 and 66,180.68

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Solution

The fourth proportional to 117,857.79, 162,660.88 and 66,180.68 is: 91,338.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,857.79 : 162,660.88 = 66,180.68 : x
  2. Step 2: Convert to fraction form
    117,857.79/162,660.88 = 66,180.68/x
  3. Step 3: Cross multiply
    117,857.79x = 162,660.88 × 66,180.68
  4. Step 4: Simplify right side
    117,857.79x = 10,765,007,647.80
  5. Step 5: Solve for x
    x = 10,765,007,647.80/117,857.79
  6. Step 6: Final answer
    x = 91,338.96

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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.