Home / 105,476.87-145,556.97-57,077.73

Finding the Fourth Proportional to 105,476.87, 145,556.97 and 57,077.73

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Solution

The fourth proportional to 105,476.87, 145,556.97 and 57,077.73 is: 78,766.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,476.87 : 145,556.97 = 57,077.73 : x
  2. Step 2: Convert to fraction form
    105,476.87/145,556.97 = 57,077.73/x
  3. Step 3: Cross multiply
    105,476.87x = 145,556.97 × 57,077.73
  4. Step 4: Simplify right side
    105,476.87x = 8,308,061,511.78
  5. Step 5: Solve for x
    x = 8,308,061,511.78/105,476.87
  6. Step 6: Final answer
    x = 78,766.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.