Home / 205,548.39-307,728.45-126,422.73

Finding the Fourth Proportional to 205,548.39, 307,728.45 and 126,422.73

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Solution

The fourth proportional to 205,548.39, 307,728.45 and 126,422.73 is: 189,268.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,548.39 : 307,728.45 = 126,422.73 : x
  2. Step 2: Convert to fraction form
    205,548.39/307,728.45 = 126,422.73/x
  3. Step 3: Cross multiply
    205,548.39x = 307,728.45 × 126,422.73
  4. Step 4: Simplify right side
    205,548.39x = 38,903,870,747.67
  5. Step 5: Solve for x
    x = 38,903,870,747.67/205,548.39
  6. Step 6: Final answer
    x = 189,268.67

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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.