Home / 203,129,131.59-280,404,020.43-137,139,020.01

Finding the Fourth Proportional to 203,129,131.59, 280,404,020.43 and 137,139,020.01

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Solution

The fourth proportional to 203,129,131.59, 280,404,020.43 and 137,139,020.01 is: 189,309,786.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,129,131.59 : 280,404,020.43 = 137,139,020.01 : x
  2. Step 2: Convert to fraction form
    203,129,131.59/280,404,020.43 = 137,139,020.01/x
  3. Step 3: Cross multiply
    203,129,131.59x = 280,404,020.43 × 137,139,020.01
  4. Step 4: Simplify right side
    203,129,131.59x = 38,454,332,568,634,216
  5. Step 5: Solve for x
    x = 38,454,332,568,634,216/203,129,131.59
  6. Step 6: Final answer
    x = 189,309,786.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.