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Finding the Fourth Proportional to 120,396.06, 166,144.88 and 69,408.89

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Solution

The fourth proportional to 120,396.06, 166,144.88 and 69,408.89 is: 95,783.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,396.06 : 166,144.88 = 69,408.89 : x
  2. Step 2: Convert to fraction form
    120,396.06/166,144.88 = 69,408.89/x
  3. Step 3: Cross multiply
    120,396.06x = 166,144.88 × 69,408.89
  4. Step 4: Simplify right side
    120,396.06x = 11,531,931,699.98
  5. Step 5: Solve for x
    x = 11,531,931,699.98/120,396.06
  6. Step 6: Final answer
    x = 95,783.30

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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.