Home / 128,303,999.20-192,455,998.80-46,422,719.20

Finding the Fourth Proportional to 128,303,999.20, 192,455,998.80 and 46,422,719.20

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Solution

The fourth proportional to 128,303,999.20, 192,455,998.80 and 46,422,719.20 is: 69,634,078.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,303,999.20 : 192,455,998.80 = 46,422,719.20 : x
  2. Step 2: Convert to fraction form
    128,303,999.20/192,455,998.80 = 46,422,719.20/x
  3. Step 3: Cross multiply
    128,303,999.20x = 192,455,998.80 × 46,422,719.20
  4. Step 4: Simplify right side
    128,303,999.20x = 8,934,330,790,647,938
  5. Step 5: Solve for x
    x = 8,934,330,790,647,938/128,303,999.20
  6. Step 6: Final answer
    x = 69,634,078.80

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1.5x scale

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.