Home / 129,795.20-194,660.40-49,815.80

Finding the Fourth Proportional to 129,795.20, 194,660.40 and 49,815.80

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Solution

The fourth proportional to 129,795.20, 194,660.40 and 49,815.80 is: 74,711.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,795.20 : 194,660.40 = 49,815.80 : x
  2. Step 2: Convert to fraction form
    129,795.20/194,660.40 = 49,815.80/x
  3. Step 3: Cross multiply
    129,795.20x = 194,660.40 × 49,815.80
  4. Step 4: Simplify right side
    129,795.20x = 9,697,163,554.32
  5. Step 5: Solve for x
    x = 9,697,163,554.32/129,795.20
  6. Step 6: Final answer
    x = 74,711.26

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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.