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Finding the Fourth Proportional to 120,699.50, 166,571.02 and 66,984.98

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Solution

The fourth proportional to 120,699.50, 166,571.02 and 66,984.98 is: 92,442.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,699.50 : 166,571.02 = 66,984.98 : x
  2. Step 2: Convert to fraction form
    120,699.50/166,571.02 = 66,984.98/x
  3. Step 3: Cross multiply
    120,699.50x = 166,571.02 × 66,984.98
  4. Step 4: Simplify right side
    120,699.50x = 11,157,756,443.28
  5. Step 5: Solve for x
    x = 11,157,756,443.28/120,699.50
  6. Step 6: Final answer
    x = 92,442.44

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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.