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Finding the Fourth Proportional to 120,992.80, 166,970.04 and 68,000.80

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Solution

The fourth proportional to 120,992.80, 166,970.04 and 68,000.80 is: 93,841.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,992.80 : 166,970.04 = 68,000.80 : x
  2. Step 2: Convert to fraction form
    120,992.80/166,970.04 = 68,000.80/x
  3. Step 3: Cross multiply
    120,992.80x = 166,970.04 × 68,000.80
  4. Step 4: Simplify right side
    120,992.80x = 11,354,096,296.03
  5. Step 5: Solve for x
    x = 11,354,096,296.03/120,992.80
  6. Step 6: Final answer
    x = 93,841.09

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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.