Home / 219,769.78-303,186.09-129,084.88

Finding the Fourth Proportional to 219,769.78, 303,186.09 and 129,084.88

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Solution

The fourth proportional to 219,769.78, 303,186.09 and 129,084.88 is: 178,080.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,769.78 : 303,186.09 = 129,084.88 : x
  2. Step 2: Convert to fraction form
    219,769.78/303,186.09 = 129,084.88/x
  3. Step 3: Cross multiply
    219,769.78x = 303,186.09 × 129,084.88
  4. Step 4: Simplify right side
    219,769.78x = 39,136,741,106.04
  5. Step 5: Solve for x
    x = 39,136,741,106.04/219,769.78
  6. Step 6: Final answer
    x = 178,080.63

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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.