Home / 129,679.60-194,519.48-40,942.16

Finding the Fourth Proportional to 129,679.60, 194,519.48 and 40,942.16

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Solution

The fourth proportional to 129,679.60, 194,519.48 and 40,942.16 is: 61,413.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,679.60 : 194,519.48 = 40,942.16 : x
  2. Step 2: Convert to fraction form
    129,679.60/194,519.48 = 40,942.16/x
  3. Step 3: Cross multiply
    129,679.60x = 194,519.48 × 40,942.16
  4. Step 4: Simplify right side
    129,679.60x = 7,964,047,673.28
  5. Step 5: Solve for x
    x = 7,964,047,673.28/129,679.60
  6. Step 6: Final answer
    x = 61,413.27

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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.