Home / 129,329.58-178,499.38-80,953.96

Finding the Fourth Proportional to 129,329.58, 178,499.38 and 80,953.96

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Solution

The fourth proportional to 129,329.58, 178,499.38 and 80,953.96 is: 111,731.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,329.58 : 178,499.38 = 80,953.96 : x
  2. Step 2: Convert to fraction form
    129,329.58/178,499.38 = 80,953.96/x
  3. Step 3: Cross multiply
    129,329.58x = 178,499.38 × 80,953.96
  4. Step 4: Simplify right side
    129,329.58x = 14,450,231,668.54
  5. Step 5: Solve for x
    x = 14,450,231,668.54/129,329.58
  6. Step 6: Final answer
    x = 111,731.84

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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.