Home / 129,868.12-195,142.38-113,269.60

Finding the Fourth Proportional to 129,868.12, 195,142.38 and 113,269.60

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Solution

The fourth proportional to 129,868.12, 195,142.38 and 113,269.60 is: 170,201.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,868.12 : 195,142.38 = 113,269.60 : x
  2. Step 2: Convert to fraction form
    129,868.12/195,142.38 = 113,269.60/x
  3. Step 3: Cross multiply
    129,868.12x = 195,142.38 × 113,269.60
  4. Step 4: Simplify right side
    129,868.12x = 22,103,699,325.65
  5. Step 5: Solve for x
    x = 22,103,699,325.65/129,868.12
  6. Step 6: Final answer
    x = 170,201.12

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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.