Home / 219,769.62-303,186.15-128,965.38

Finding the Fourth Proportional to 219,769.62, 303,186.15 and 128,965.38

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Solution

The fourth proportional to 219,769.62, 303,186.15 and 128,965.38 is: 177,915.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,769.62 : 303,186.15 = 128,965.38 : x
  2. Step 2: Convert to fraction form
    219,769.62/303,186.15 = 128,965.38/x
  3. Step 3: Cross multiply
    219,769.62x = 303,186.15 × 128,965.38
  4. Step 4: Simplify right side
    219,769.62x = 39,100,517,045.49
  5. Step 5: Solve for x
    x = 39,100,517,045.49/219,769.62
  6. Step 6: Final answer
    x = 177,915.93

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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.