Home / 129,819.89-194,656.78-89,340.95

Finding the Fourth Proportional to 129,819.89, 194,656.78 and 89,340.95

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Solution

The fourth proportional to 129,819.89, 194,656.78 and 89,340.95 is: 133,961.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,819.89 : 194,656.78 = 89,340.95 : x
  2. Step 2: Convert to fraction form
    129,819.89/194,656.78 = 89,340.95/x
  3. Step 3: Cross multiply
    129,819.89x = 194,656.78 × 89,340.95
  4. Step 4: Simplify right side
    129,819.89x = 17,390,821,649.14
  5. Step 5: Solve for x
    x = 17,390,821,649.14/129,819.89
  6. Step 6: Final answer
    x = 133,961.15

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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.