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Finding the Fourth Proportional to 120,720.72, 166,592.03 and 67,002.51

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Solution

The fourth proportional to 120,720.72, 166,592.03 and 67,002.51 is: 92,462.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,720.72 : 166,592.03 = 67,002.51 : x
  2. Step 2: Convert to fraction form
    120,720.72/166,592.03 = 67,002.51/x
  3. Step 3: Cross multiply
    120,720.72x = 166,592.03 × 67,002.51
  4. Step 4: Simplify right side
    120,720.72x = 11,162,083,820.98
  5. Step 5: Solve for x
    x = 11,162,083,820.98/120,720.72
  6. Step 6: Final answer
    x = 92,462.04

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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.