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Finding the Fourth Proportional to 120,604, 166,433.56 and 66,897.28

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Solution

The fourth proportional to 120,604, 166,433.56 and 66,897.28 is: 92,318.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,604 : 166,433.56 = 66,897.28 : x
  2. Step 2: Convert to fraction form
    120,604/166,433.56 = 66,897.28/x
  3. Step 3: Cross multiply
    120,604x = 166,433.56 × 66,897.28
  4. Step 4: Simplify right side
    120,604x = 11,133,952,464.72
  5. Step 5: Solve for x
    x = 11,133,952,464.72/120,604
  6. Step 6: Final answer
    x = 92,318.27

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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.