Home / 129,912.35-194,868.53-103,668.35

Finding the Fourth Proportional to 129,912.35, 194,868.53 and 103,668.35

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Solution

The fourth proportional to 129,912.35, 194,868.53 and 103,668.35 is: 155,502.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,912.35 : 194,868.53 = 103,668.35 : x
  2. Step 2: Convert to fraction form
    129,912.35/194,868.53 = 103,668.35/x
  3. Step 3: Cross multiply
    129,912.35x = 194,868.53 × 103,668.35
  4. Step 4: Simplify right side
    129,912.35x = 20,201,698,972.03
  5. Step 5: Solve for x
    x = 20,201,698,972.03/129,912.35
  6. Step 6: Final answer
    x = 155,502.53

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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.