Home / 128,760.76-193,087.68-49,829.50

Finding the Fourth Proportional to 128,760.76, 193,087.68 and 49,829.50

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Solution

The fourth proportional to 128,760.76, 193,087.68 and 49,829.50 is: 74,723.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,760.76 : 193,087.68 = 49,829.50 : x
  2. Step 2: Convert to fraction form
    128,760.76/193,087.68 = 49,829.50/x
  3. Step 3: Cross multiply
    128,760.76x = 193,087.68 × 49,829.50
  4. Step 4: Simplify right side
    128,760.76x = 9,621,462,550.56
  5. Step 5: Solve for x
    x = 9,621,462,550.56/128,760.76
  6. Step 6: Final answer
    x = 74,723.56

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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.