Home / 120,638.87-166,474.14-66,922.81

Finding the Fourth Proportional to 120,638.87, 166,474.14 and 66,922.81

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Solution

The fourth proportional to 120,638.87, 166,474.14 and 66,922.81 is: 92,349.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,638.87 : 166,474.14 = 66,922.81 : x
  2. Step 2: Convert to fraction form
    120,638.87/166,474.14 = 66,922.81/x
  3. Step 3: Cross multiply
    120,638.87x = 166,474.14 × 66,922.81
  4. Step 4: Simplify right side
    120,638.87x = 11,140,916,573.99
  5. Step 5: Solve for x
    x = 11,140,916,573.99/120,638.87
  6. Step 6: Final answer
    x = 92,349.31

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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.