Home / 198,003.20-297,004.80-127,961.60

Finding the Fourth Proportional to 198,003.20, 297,004.80 and 127,961.60

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Solution

The fourth proportional to 198,003.20, 297,004.80 and 127,961.60 is: 191,942.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,003.20 : 297,004.80 = 127,961.60 : x
  2. Step 2: Convert to fraction form
    198,003.20/297,004.80 = 127,961.60/x
  3. Step 3: Cross multiply
    198,003.20x = 297,004.80 × 127,961.60
  4. Step 4: Simplify right side
    198,003.20x = 38,005,209,415.68
  5. Step 5: Solve for x
    x = 38,005,209,415.68/198,003.20
  6. Step 6: Final answer
    x = 191,942.40

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1.5x scale

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.