Home / 129,696.82-178,984.35-73,108.18

Finding the Fourth Proportional to 129,696.82, 178,984.35 and 73,108.18

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Solution

The fourth proportional to 129,696.82, 178,984.35 and 73,108.18 is: 100,890.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,696.82 : 178,984.35 = 73,108.18 : x
  2. Step 2: Convert to fraction form
    129,696.82/178,984.35 = 73,108.18/x
  3. Step 3: Cross multiply
    129,696.82x = 178,984.35 × 73,108.18
  4. Step 4: Simplify right side
    129,696.82x = 13,085,220,076.98
  5. Step 5: Solve for x
    x = 13,085,220,076.98/129,696.82
  6. Step 6: Final answer
    x = 100,890.83

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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.