Home / 198,696.16-298,063.68-72,370.72

Finding the Fourth Proportional to 198,696.16, 298,063.68 and 72,370.72

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Solution

The fourth proportional to 198,696.16, 298,063.68 and 72,370.72 is: 108,563.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,696.16 : 298,063.68 = 72,370.72 : x
  2. Step 2: Convert to fraction form
    198,696.16/298,063.68 = 72,370.72/x
  3. Step 3: Cross multiply
    198,696.16x = 298,063.68 × 72,370.72
  4. Step 4: Simplify right side
    198,696.16x = 21,571,083,127.45
  5. Step 5: Solve for x
    x = 21,571,083,127.45/198,696.16
  6. Step 6: Final answer
    x = 108,563.16

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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.