Home / 128,212.11-192,326.37-49,326.35

Finding the Fourth Proportional to 128,212.11, 192,326.37 and 49,326.35

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Solution

The fourth proportional to 128,212.11, 192,326.37 and 49,326.35 is: 73,992.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,212.11 : 192,326.37 = 49,326.35 : x
  2. Step 2: Convert to fraction form
    128,212.11/192,326.37 = 49,326.35/x
  3. Step 3: Cross multiply
    128,212.11x = 192,326.37 × 49,326.35
  4. Step 4: Simplify right side
    128,212.11x = 9,486,756,879.22
  5. Step 5: Solve for x
    x = 9,486,756,879.22/128,212.11
  6. Step 6: Final answer
    x = 73,992.67

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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.