Home / 129,376.26-194,111.64-54,515.16

Finding the Fourth Proportional to 129,376.26, 194,111.64 and 54,515.16

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Solution

The fourth proportional to 129,376.26, 194,111.64 and 54,515.16 is: 81,792.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,376.26 : 194,111.64 = 54,515.16 : x
  2. Step 2: Convert to fraction form
    129,376.26/194,111.64 = 54,515.16/x
  3. Step 3: Cross multiply
    129,376.26x = 194,111.64 × 54,515.16
  4. Step 4: Simplify right side
    129,376.26x = 10,582,027,112.46
  5. Step 5: Solve for x
    x = 10,582,027,112.46/129,376.26
  6. Step 6: Final answer
    x = 81,792.65

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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.