Home / 120,905.73-166,846.58-67,189.38

Finding the Fourth Proportional to 120,905.73, 166,846.58 and 67,189.38

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Solution

The fourth proportional to 120,905.73, 166,846.58 and 67,189.38 is: 92,719.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,905.73 : 166,846.58 = 67,189.38 : x
  2. Step 2: Convert to fraction form
    120,905.73/166,846.58 = 67,189.38/x
  3. Step 3: Cross multiply
    120,905.73x = 166,846.58 × 67,189.38
  4. Step 4: Simplify right side
    120,905.73x = 11,210,317,929.37
  5. Step 5: Solve for x
    x = 11,210,317,929.37/120,905.73
  6. Step 6: Final answer
    x = 92,719.49

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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.