Home / 129,531.33-194,323.19-54,651.64

Finding the Fourth Proportional to 129,531.33, 194,323.19 and 54,651.64

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Solution

The fourth proportional to 129,531.33, 194,323.19 and 54,651.64 is: 81,988.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,531.33 : 194,323.19 = 54,651.64 : x
  2. Step 2: Convert to fraction form
    129,531.33/194,323.19 = 54,651.64/x
  3. Step 3: Cross multiply
    129,531.33x = 194,323.19 × 54,651.64
  4. Step 4: Simplify right side
    129,531.33x = 10,620,079,915.29
  5. Step 5: Solve for x
    x = 10,620,079,915.29/129,531.33
  6. Step 6: Final answer
    x = 81,988.51

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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.