Home / 129,865.78-194,809.80-45,618.62

Finding the Fourth Proportional to 129,865.78, 194,809.80 and 45,618.62

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Solution

The fourth proportional to 129,865.78, 194,809.80 and 45,618.62 is: 68,431.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,865.78 : 194,809.80 = 45,618.62 : x
  2. Step 2: Convert to fraction form
    129,865.78/194,809.80 = 45,618.62/x
  3. Step 3: Cross multiply
    129,865.78x = 194,809.80 × 45,618.62
  4. Step 4: Simplify right side
    129,865.78x = 8,886,954,238.48
  5. Step 5: Solve for x
    x = 8,886,954,238.48/129,865.78
  6. Step 6: Final answer
    x = 68,431.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.