Home / 129,789.09-194,519.61-69,668.46

Finding the Fourth Proportional to 129,789.09, 194,519.61 and 69,668.46

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Solution

The fourth proportional to 129,789.09, 194,519.61 and 69,668.46 is: 104,414.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,789.09 : 194,519.61 = 69,668.46 : x
  2. Step 2: Convert to fraction form
    129,789.09/194,519.61 = 69,668.46/x
  3. Step 3: Cross multiply
    129,789.09x = 194,519.61 × 69,668.46
  4. Step 4: Simplify right side
    129,789.09x = 13,551,881,668.50
  5. Step 5: Solve for x
    x = 13,551,881,668.50/129,789.09
  6. Step 6: Final answer
    x = 104,414.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.