Home / 129,198.93-193,880.52-66,869.43

Finding the Fourth Proportional to 129,198.93, 193,880.52 and 66,869.43

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Solution

The fourth proportional to 129,198.93, 193,880.52 and 66,869.43 is: 100,346.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,198.93 : 193,880.52 = 66,869.43 : x
  2. Step 2: Convert to fraction form
    129,198.93/193,880.52 = 66,869.43/x
  3. Step 3: Cross multiply
    129,198.93x = 193,880.52 × 66,869.43
  4. Step 4: Simplify right side
    129,198.93x = 12,964,679,860.50
  5. Step 5: Solve for x
    x = 12,964,679,860.50/129,198.93
  6. Step 6: Final answer
    x = 100,346.65

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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.