Home / 129,968.20-194,855.10-70,870.60

Finding the Fourth Proportional to 129,968.20, 194,855.10 and 70,870.60

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Solution

The fourth proportional to 129,968.20, 194,855.10 and 70,870.60 is: 106,252.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,968.20 : 194,855.10 = 70,870.60 : x
  2. Step 2: Convert to fraction form
    129,968.20/194,855.10 = 70,870.60/x
  3. Step 3: Cross multiply
    129,968.20x = 194,855.10 × 70,870.60
  4. Step 4: Simplify right side
    129,968.20x = 13,809,497,850.06
  5. Step 5: Solve for x
    x = 13,809,497,850.06/129,968.20
  6. Step 6: Final answer
    x = 106,252.90

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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.