Home / 129,883.10-194,824.65-103,639.10

Finding the Fourth Proportional to 129,883.10, 194,824.65 and 103,639.10

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Solution

The fourth proportional to 129,883.10, 194,824.65 and 103,639.10 is: 155,458.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,883.10 : 194,824.65 = 103,639.10 : x
  2. Step 2: Convert to fraction form
    129,883.10/194,824.65 = 103,639.10/x
  3. Step 3: Cross multiply
    129,883.10x = 194,824.65 × 103,639.10
  4. Step 4: Simplify right side
    129,883.10x = 20,191,451,383.82
  5. Step 5: Solve for x
    x = 20,191,451,383.82/129,883.10
  6. Step 6: Final answer
    x = 155,458.65

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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.