Home / 143,721.70-198,340.43-82,479.08

Finding the Fourth Proportional to 143,721.70, 198,340.43 and 82,479.08

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Solution

The fourth proportional to 143,721.70, 198,340.43 and 82,479.08 is: 113,823.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,721.70 : 198,340.43 = 82,479.08 : x
  2. Step 2: Convert to fraction form
    143,721.70/198,340.43 = 82,479.08/x
  3. Step 3: Cross multiply
    143,721.70x = 198,340.43 × 82,479.08
  4. Step 4: Simplify right side
    143,721.70x = 16,358,936,276.66
  5. Step 5: Solve for x
    x = 16,358,936,276.66/143,721.70
  6. Step 6: Final answer
    x = 113,823.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.