Home / 139,927,269.80-209,979,378.30-82,419,429.80

Finding the Fourth Proportional to 139,927,269.80, 209,979,378.30 and 82,419,429.80

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Solution

The fourth proportional to 139,927,269.80, 209,979,378.30 and 82,419,429.80 is: 123,681,257.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,927,269.80 : 209,979,378.30 = 82,419,429.80 : x
  2. Step 2: Convert to fraction form
    139,927,269.80/209,979,378.30 = 82,419,429.80/x
  3. Step 3: Cross multiply
    139,927,269.80x = 209,979,378.30 × 82,419,429.80
  4. Step 4: Simplify right side
    139,927,269.80x = 17,306,380,629,244,494
  5. Step 5: Solve for x
    x = 17,306,380,629,244,494/139,927,269.80
  6. Step 6: Final answer
    x = 123,681,257.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.