Home / 129,868.08-194,813.20-45,620.88

Finding the Fourth Proportional to 129,868.08, 194,813.20 and 45,620.88

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Solution

The fourth proportional to 129,868.08, 194,813.20 and 45,620.88 is: 68,435.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,868.08 : 194,813.20 = 45,620.88 : x
  2. Step 2: Convert to fraction form
    129,868.08/194,813.20 = 45,620.88/x
  3. Step 3: Cross multiply
    129,868.08x = 194,813.20 × 45,620.88
  4. Step 4: Simplify right side
    129,868.08x = 8,887,549,619.62
  5. Step 5: Solve for x
    x = 8,887,549,619.62/129,868.08
  6. Step 6: Final answer
    x = 68,435.21

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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.