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Finding the Fourth Proportional to 120,829.98, 166,745.42 and 67,120.01

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Solution

The fourth proportional to 120,829.98, 166,745.42 and 67,120.01 is: 92,625.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,829.98 : 166,745.42 = 67,120.01 : x
  2. Step 2: Convert to fraction form
    120,829.98/166,745.42 = 67,120.01/x
  3. Step 3: Cross multiply
    120,829.98x = 166,745.42 × 67,120.01
  4. Step 4: Simplify right side
    120,829.98x = 11,191,953,591.93
  5. Step 5: Solve for x
    x = 11,191,953,591.93/120,829.98
  6. Step 6: Final answer
    x = 92,625.63

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1.5x scale

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.