Home / 128,896,939.20-193,345,408.80-123,858,091.20

Finding the Fourth Proportional to 128,896,939.20, 193,345,408.80 and 123,858,091.20

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Solution

The fourth proportional to 128,896,939.20, 193,345,408.80 and 123,858,091.20 is: 185,787,136.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,896,939.20 : 193,345,408.80 = 123,858,091.20 : x
  2. Step 2: Convert to fraction form
    128,896,939.20/193,345,408.80 = 123,858,091.20/x
  3. Step 3: Cross multiply
    128,896,939.20x = 193,345,408.80 × 123,858,091.20
  4. Step 4: Simplify right side
    128,896,939.20x = 23,947,393,276,251,684
  5. Step 5: Solve for x
    x = 23,947,393,276,251,684/128,896,939.20
  6. Step 6: Final answer
    x = 185,787,136.80

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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.