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Finding the Fourth Proportional to 120,504.66, 166,302.03 and 66,790.86

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Solution

The fourth proportional to 120,504.66, 166,302.03 and 66,790.86 is: 92,174.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,504.66 : 166,302.03 = 66,790.86 : x
  2. Step 2: Convert to fraction form
    120,504.66/166,302.03 = 66,790.86/x
  3. Step 3: Cross multiply
    120,504.66x = 166,302.03 × 66,790.86
  4. Step 4: Simplify right side
    120,504.66x = 11,107,455,603.45
  5. Step 5: Solve for x
    x = 11,107,455,603.45/120,504.66
  6. Step 6: Final answer
    x = 92,174.49

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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.