Home / 129,433.14-194,114.07-81,977.04

Finding the Fourth Proportional to 129,433.14, 194,114.07 and 81,977.04

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Solution

The fourth proportional to 129,433.14, 194,114.07 and 81,977.04 is: 122,942.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,433.14 : 194,114.07 = 81,977.04 : x
  2. Step 2: Convert to fraction form
    129,433.14/194,114.07 = 81,977.04/x
  3. Step 3: Cross multiply
    129,433.14x = 194,114.07 × 81,977.04
  4. Step 4: Simplify right side
    129,433.14x = 15,912,896,880.95
  5. Step 5: Solve for x
    x = 15,912,896,880.95/129,433.14
  6. Step 6: Final answer
    x = 122,942.99

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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.