Home / 128,321,519.69-192,506,238.12-58,296,662.43

Finding the Fourth Proportional to 128,321,519.69, 192,506,238.12 and 58,296,662.43

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Solution

The fourth proportional to 128,321,519.69, 192,506,238.12 and 58,296,662.43 is: 87,455,878.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,321,519.69 : 192,506,238.12 = 58,296,662.43 : x
  2. Step 2: Convert to fraction form
    128,321,519.69/192,506,238.12 = 58,296,662.43/x
  3. Step 3: Cross multiply
    128,321,519.69x = 192,506,238.12 × 58,296,662.43
  4. Step 4: Simplify right side
    128,321,519.69x = 11,222,471,179,930,400
  5. Step 5: Solve for x
    x = 11,222,471,179,930,400/128,321,519.69
  6. Step 6: Final answer
    x = 87,455,878.07

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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.