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Finding the Fourth Proportional to 199,518.66, 275,310.95 and 126,929.88

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Solution

The fourth proportional to 199,518.66, 275,310.95 and 126,929.88 is: 175,147.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,518.66 : 275,310.95 = 126,929.88 : x
  2. Step 2: Convert to fraction form
    199,518.66/275,310.95 = 126,929.88/x
  3. Step 3: Cross multiply
    199,518.66x = 275,310.95 × 126,929.88
  4. Step 4: Simplify right side
    199,518.66x = 34,945,185,211.54
  5. Step 5: Solve for x
    x = 34,945,185,211.54/199,518.66
  6. Step 6: Final answer
    x = 175,147.45

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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.