Home / 143,245.71-197,684.58-78,717.67

Finding the Fourth Proportional to 143,245.71, 197,684.58 and 78,717.67

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Solution

The fourth proportional to 143,245.71, 197,684.58 and 78,717.67 is: 108,633.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,245.71 : 197,684.58 = 78,717.67 : x
  2. Step 2: Convert to fraction form
    143,245.71/197,684.58 = 78,717.67/x
  3. Step 3: Cross multiply
    143,245.71x = 197,684.58 × 78,717.67
  4. Step 4: Simplify right side
    143,245.71x = 15,561,269,532.53
  5. Step 5: Solve for x
    x = 15,561,269,532.53/143,245.71
  6. Step 6: Final answer
    x = 108,633.41

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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.