Home / 216,628.38-298,947.78-121,136.67

Finding the Fourth Proportional to 216,628.38, 298,947.78 and 121,136.67

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Solution

The fourth proportional to 216,628.38, 298,947.78 and 121,136.67 is: 167,168.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,628.38 : 298,947.78 = 121,136.67 : x
  2. Step 2: Convert to fraction form
    216,628.38/298,947.78 = 121,136.67/x
  3. Step 3: Cross multiply
    216,628.38x = 298,947.78 × 121,136.67
  4. Step 4: Simplify right side
    216,628.38x = 36,213,538,573.09
  5. Step 5: Solve for x
    x = 36,213,538,573.09/216,628.38
  6. Step 6: Final answer
    x = 167,168.95

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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.