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Finding the Fourth Proportional to 111,157.94, 166,739.39 and 40,086.31

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Solution

The fourth proportional to 111,157.94, 166,739.39 and 40,086.31 is: 60,130.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,157.94 : 166,739.39 = 40,086.31 : x
  2. Step 2: Convert to fraction form
    111,157.94/166,739.39 = 40,086.31/x
  3. Step 3: Cross multiply
    111,157.94x = 166,739.39 × 40,086.31
  4. Step 4: Simplify right side
    111,157.94x = 6,683,966,876.75
  5. Step 5: Solve for x
    x = 6,683,966,876.75/111,157.94
  6. Step 6: Final answer
    x = 60,130.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.