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Finding the Fourth Proportional to 199,798.83, 299,698.23 and 81,479.37

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Solution

The fourth proportional to 199,798.83, 299,698.23 and 81,479.37 is: 122,219.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,798.83 : 299,698.23 = 81,479.37 : x
  2. Step 2: Convert to fraction form
    199,798.83/299,698.23 = 81,479.37/x
  3. Step 3: Cross multiply
    199,798.83x = 299,698.23 × 81,479.37
  4. Step 4: Simplify right side
    199,798.83x = 24,419,222,970.52
  5. Step 5: Solve for x
    x = 24,419,222,970.52/199,798.83
  6. Step 6: Final answer
    x = 122,219.05

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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.