Home / 120,435.10-166,193.38-65,976.48

Finding the Fourth Proportional to 120,435.10, 166,193.38 and 65,976.48

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Solution

The fourth proportional to 120,435.10, 166,193.38 and 65,976.48 is: 91,043.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,435.10 : 166,193.38 = 65,976.48 : x
  2. Step 2: Convert to fraction form
    120,435.10/166,193.38 = 65,976.48/x
  3. Step 3: Cross multiply
    120,435.10x = 166,193.38 × 65,976.48
  4. Step 4: Simplify right side
    120,435.10x = 10,964,854,211.70
  5. Step 5: Solve for x
    x = 10,964,854,211.70/120,435.10
  6. Step 6: Final answer
    x = 91,043.68

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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.