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Finding the Fourth Proportional to 129,759.60, 194,639.40 and 115,244.40

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Solution

The fourth proportional to 129,759.60, 194,639.40 and 115,244.40 is: 172,866.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,759.60 : 194,639.40 = 115,244.40 : x
  2. Step 2: Convert to fraction form
    129,759.60/194,639.40 = 115,244.40/x
  3. Step 3: Cross multiply
    129,759.60x = 194,639.40 × 115,244.40
  4. Step 4: Simplify right side
    129,759.60x = 22,431,100,869.36
  5. Step 5: Solve for x
    x = 22,431,100,869.36/129,759.60
  6. Step 6: Final answer
    x = 172,866.60

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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.