Home / 129,505.44-178,725.72-78,523.04

Finding the Fourth Proportional to 129,505.44, 178,725.72 and 78,523.04

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Solution

The fourth proportional to 129,505.44, 178,725.72 and 78,523.04 is: 108,366.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,505.44 : 178,725.72 = 78,523.04 : x
  2. Step 2: Convert to fraction form
    129,505.44/178,725.72 = 78,523.04/x
  3. Step 3: Cross multiply
    129,505.44x = 178,725.72 × 78,523.04
  4. Step 4: Simplify right side
    129,505.44x = 14,034,086,860.59
  5. Step 5: Solve for x
    x = 14,034,086,860.59/129,505.44
  6. Step 6: Final answer
    x = 108,366.77

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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.