Home / 196,623,231.93-294,901,965-72,100,128.71

Finding the Fourth Proportional to 196,623,231.93, 294,901,965 and 72,100,128.71

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Solution

The fourth proportional to 196,623,231.93, 294,901,965 and 72,100,128.71 is: 108,138,135.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,623,231.93 : 294,901,965 = 72,100,128.71 : x
  2. Step 2: Convert to fraction form
    196,623,231.93/294,901,965 = 72,100,128.71/x
  3. Step 3: Cross multiply
    196,623,231.93x = 294,901,965 × 72,100,128.71
  4. Step 4: Simplify right side
    196,623,231.93x = 21,262,469,634,069,172
  5. Step 5: Solve for x
    x = 21,262,469,634,069,172/196,623,231.93
  6. Step 6: Final answer
    x = 108,138,135.18

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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.