Home / 129,920.20-194,783.10-70,822.60

Finding the Fourth Proportional to 129,920.20, 194,783.10 and 70,822.60

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Solution

The fourth proportional to 129,920.20, 194,783.10 and 70,822.60 is: 106,180.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,920.20 : 194,783.10 = 70,822.60 : x
  2. Step 2: Convert to fraction form
    129,920.20/194,783.10 = 70,822.60/x
  3. Step 3: Cross multiply
    129,920.20x = 194,783.10 × 70,822.60
  4. Step 4: Simplify right side
    129,920.20x = 13,795,045,578.06
  5. Step 5: Solve for x
    x = 13,795,045,578.06/129,920.20
  6. Step 6: Final answer
    x = 106,180.91

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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.