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Finding the Fourth Proportional to 129,649.88, 194,472.89 and 79,063.77

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Solution

The fourth proportional to 129,649.88, 194,472.89 and 79,063.77 is: 118,594.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,649.88 : 194,472.89 = 79,063.77 : x
  2. Step 2: Convert to fraction form
    129,649.88/194,472.89 = 79,063.77/x
  3. Step 3: Cross multiply
    129,649.88x = 194,472.89 × 79,063.77
  4. Step 4: Simplify right side
    129,649.88x = 15,375,760,332.38
  5. Step 5: Solve for x
    x = 15,375,760,332.38/129,649.88
  6. Step 6: Final answer
    x = 118,594.48

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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.