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Finding the Fourth Proportional to 111,154.88, 166,654.56 and 55,720.64

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Solution

The fourth proportional to 111,154.88, 166,654.56 and 55,720.64 is: 83,541.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,154.88 : 166,654.56 = 55,720.64 : x
  2. Step 2: Convert to fraction form
    111,154.88/166,654.56 = 55,720.64/x
  3. Step 3: Cross multiply
    111,154.88x = 166,654.56 × 55,720.64
  4. Step 4: Simplify right side
    111,154.88x = 9,286,098,742.12
  5. Step 5: Solve for x
    x = 9,286,098,742.12/111,154.88
  6. Step 6: Final answer
    x = 83,541.98

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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.