Home / 198,915.10-274,508.80-122,478.30

Finding the Fourth Proportional to 198,915.10, 274,508.80 and 122,478.30

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Solution

The fourth proportional to 198,915.10, 274,508.80 and 122,478.30 is: 169,023.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,915.10 : 274,508.80 = 122,478.30 : x
  2. Step 2: Convert to fraction form
    198,915.10/274,508.80 = 122,478.30/x
  3. Step 3: Cross multiply
    198,915.10x = 274,508.80 × 122,478.30
  4. Step 4: Simplify right side
    198,915.10x = 33,621,370,852.84
  5. Step 5: Solve for x
    x = 33,621,370,852.84/198,915.10
  6. Step 6: Final answer
    x = 169,023.73

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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.