Home / 128,011,630.20-191,939,687.33-50,195,309.28

Finding the Fourth Proportional to 128,011,630.20, 191,939,687.33 and 50,195,309.28

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Solution

The fourth proportional to 128,011,630.20, 191,939,687.33 and 50,195,309.28 is: 75,262,473.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,011,630.20 : 191,939,687.33 = 50,195,309.28 : x
  2. Step 2: Convert to fraction form
    128,011,630.20/191,939,687.33 = 50,195,309.28/x
  3. Step 3: Cross multiply
    128,011,630.20x = 191,939,687.33 × 50,195,309.28
  4. Step 4: Simplify right side
    128,011,630.20x = 9,634,471,968,384,870
  5. Step 5: Solve for x
    x = 9,634,471,968,384,870/128,011,630.20
  6. Step 6: Final answer
    x = 75,262,473.83

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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.