Home / 128,919.60-193,309.74-50,012.64

Finding the Fourth Proportional to 128,919.60, 193,309.74 and 50,012.64

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Solution

The fourth proportional to 128,919.60, 193,309.74 and 50,012.64 is: 74,991.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,919.60 : 193,309.74 = 50,012.64 : x
  2. Step 2: Convert to fraction form
    128,919.60/193,309.74 = 50,012.64/x
  3. Step 3: Cross multiply
    128,919.60x = 193,309.74 × 50,012.64
  4. Step 4: Simplify right side
    128,919.60x = 9,667,930,435.11
  5. Step 5: Solve for x
    x = 9,667,930,435.11/128,919.60
  6. Step 6: Final answer
    x = 74,991.94

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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.