Home / 129,969.20-194,870.34-54,120.24

Finding the Fourth Proportional to 129,969.20, 194,870.34 and 54,120.24

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Solution

The fourth proportional to 129,969.20, 194,870.34 and 54,120.24 is: 81,145.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,969.20 : 194,870.34 = 54,120.24 : x
  2. Step 2: Convert to fraction form
    129,969.20/194,870.34 = 54,120.24/x
  3. Step 3: Cross multiply
    129,969.20x = 194,870.34 × 54,120.24
  4. Step 4: Simplify right side
    129,969.20x = 10,546,429,569.68
  5. Step 5: Solve for x
    x = 10,546,429,569.68/129,969.20
  6. Step 6: Final answer
    x = 81,145.61

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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.