Home / 220,078.07-303,708.98-129,437.85

Finding the Fourth Proportional to 220,078.07, 303,708.98 and 129,437.85

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Solution

The fourth proportional to 220,078.07, 303,708.98 and 129,437.85 is: 178,624.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,078.07 : 303,708.98 = 129,437.85 : x
  2. Step 2: Convert to fraction form
    220,078.07/303,708.98 = 129,437.85/x
  3. Step 3: Cross multiply
    220,078.07x = 303,708.98 × 129,437.85
  4. Step 4: Simplify right side
    220,078.07x = 39,311,436,749.70
  5. Step 5: Solve for x
    x = 39,311,436,749.70/220,078.07
  6. Step 6: Final answer
    x = 178,624.97

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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.