Home / 129,819.40-194,729.10-79,955.80

Finding the Fourth Proportional to 129,819.40, 194,729.10 and 79,955.80

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Solution

The fourth proportional to 129,819.40, 194,729.10 and 79,955.80 is: 119,933.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,819.40 : 194,729.10 = 79,955.80 : x
  2. Step 2: Convert to fraction form
    129,819.40/194,729.10 = 79,955.80/x
  3. Step 3: Cross multiply
    129,819.40x = 194,729.10 × 79,955.80
  4. Step 4: Simplify right side
    129,819.40x = 15,569,720,973.78
  5. Step 5: Solve for x
    x = 15,569,720,973.78/129,819.40
  6. Step 6: Final answer
    x = 119,933.70

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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.