Home / 128,036,459.80-192,055,187.99-30,992,011.73

Finding the Fourth Proportional to 128,036,459.80, 192,055,187.99 and 30,992,011.73

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Solution

The fourth proportional to 128,036,459.80, 192,055,187.99 and 30,992,011.73 is: 46,488,138.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,036,459.80 : 192,055,187.99 = 30,992,011.73 : x
  2. Step 2: Convert to fraction form
    128,036,459.80/192,055,187.99 = 30,992,011.73/x
  3. Step 3: Cross multiply
    128,036,459.80x = 192,055,187.99 × 30,992,011.73
  4. Step 4: Simplify right side
    128,036,459.80x = 5,952,176,638,993,436
  5. Step 5: Solve for x
    x = 5,952,176,638,993,436/128,036,459.80
  6. Step 6: Final answer
    x = 46,488,138.21

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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.