Home / 120,947.40-166,843.62-71,861.04

Finding the Fourth Proportional to 120,947.40, 166,843.62 and 71,861.04

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Solution

The fourth proportional to 120,947.40, 166,843.62 and 71,861.04 is: 99,130.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,947.40 : 166,843.62 = 71,861.04 : x
  2. Step 2: Convert to fraction form
    120,947.40/166,843.62 = 71,861.04/x
  3. Step 3: Cross multiply
    120,947.40x = 166,843.62 × 71,861.04
  4. Step 4: Simplify right side
    120,947.40x = 11,989,556,050.56
  5. Step 5: Solve for x
    x = 11,989,556,050.56/120,947.40
  6. Step 6: Final answer
    x = 99,130.33

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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.