Home / 129,942.18-194,963.13-45,711.09

Finding the Fourth Proportional to 129,942.18, 194,963.13 and 45,711.09

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Solution

The fourth proportional to 129,942.18, 194,963.13 and 45,711.09 is: 68,584.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,942.18 : 194,963.13 = 45,711.09 : x
  2. Step 2: Convert to fraction form
    129,942.18/194,963.13 = 45,711.09/x
  3. Step 3: Cross multiply
    129,942.18x = 194,963.13 × 45,711.09
  4. Step 4: Simplify right side
    129,942.18x = 8,911,977,182.11
  5. Step 5: Solve for x
    x = 8,911,977,182.11/129,942.18
  6. Step 6: Final answer
    x = 68,584.17

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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.