Home / 120,183.36-165,873.87-72,436.77

Finding the Fourth Proportional to 120,183.36, 165,873.87 and 72,436.77

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Solution

The fourth proportional to 120,183.36, 165,873.87 and 72,436.77 is: 99,975.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,183.36 : 165,873.87 = 72,436.77 : x
  2. Step 2: Convert to fraction form
    120,183.36/165,873.87 = 72,436.77/x
  3. Step 3: Cross multiply
    120,183.36x = 165,873.87 × 72,436.77
  4. Step 4: Simplify right side
    120,183.36x = 12,015,367,370.20
  5. Step 5: Solve for x
    x = 12,015,367,370.20/120,183.36
  6. Step 6: Final answer
    x = 99,975.30

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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.