Home / 129,868.95-194,865.11-89,949.36

Finding the Fourth Proportional to 129,868.95, 194,865.11 and 89,949.36

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Solution

The fourth proportional to 129,868.95, 194,865.11 and 89,949.36 is: 134,966.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,868.95 : 194,865.11 = 89,949.36 : x
  2. Step 2: Convert to fraction form
    129,868.95/194,865.11 = 89,949.36/x
  3. Step 3: Cross multiply
    129,868.95x = 194,865.11 × 89,949.36
  4. Step 4: Simplify right side
    129,868.95x = 17,527,991,481.08
  5. Step 5: Solve for x
    x = 17,527,991,481.08/129,868.95
  6. Step 6: Final answer
    x = 134,966.76

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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.