Home / 128,914.20-193,517.10-99,462.60

Finding the Fourth Proportional to 128,914.20, 193,517.10 and 99,462.60

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Solution

The fourth proportional to 128,914.20, 193,517.10 and 99,462.60 is: 149,306.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,914.20 : 193,517.10 = 99,462.60 : x
  2. Step 2: Convert to fraction form
    128,914.20/193,517.10 = 99,462.60/x
  3. Step 3: Cross multiply
    128,914.20x = 193,517.10 × 99,462.60
  4. Step 4: Simplify right side
    128,914.20x = 19,247,713,910.46
  5. Step 5: Solve for x
    x = 19,247,713,910.46/128,914.20
  6. Step 6: Final answer
    x = 149,306.39

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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.