Home / 129,890.22-194,846.36-45,643.09

Finding the Fourth Proportional to 129,890.22, 194,846.36 and 45,643.09

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Solution

The fourth proportional to 129,890.22, 194,846.36 and 45,643.09 is: 68,468.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,890.22 : 194,846.36 = 45,643.09 : x
  2. Step 2: Convert to fraction form
    129,890.22/194,846.36 = 45,643.09/x
  3. Step 3: Cross multiply
    129,890.22x = 194,846.36 × 45,643.09
  4. Step 4: Simplify right side
    129,890.22x = 8,893,389,945.65
  5. Step 5: Solve for x
    x = 8,893,389,945.65/129,890.22
  6. Step 6: Final answer
    x = 68,468.51

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1.5x scale

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.