Home / 109,621.70-151,198.09-83,838.49

Finding the Fourth Proportional to 109,621.70, 151,198.09 and 83,838.49

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Solution

The fourth proportional to 109,621.70, 151,198.09 and 83,838.49 is: 115,636.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,621.70 : 151,198.09 = 83,838.49 : x
  2. Step 2: Convert to fraction form
    109,621.70/151,198.09 = 83,838.49/x
  3. Step 3: Cross multiply
    109,621.70x = 151,198.09 × 83,838.49
  4. Step 4: Simplify right side
    109,621.70x = 12,676,220,290.97
  5. Step 5: Solve for x
    x = 12,676,220,290.97/109,621.70
  6. Step 6: Final answer
    x = 115,636.04

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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.