Home / 129,091.94-178,163.58-72,503.32

Finding the Fourth Proportional to 129,091.94, 178,163.58 and 72,503.32

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Solution

The fourth proportional to 129,091.94, 178,163.58 and 72,503.32 is: 100,063.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,091.94 : 178,163.58 = 72,503.32 : x
  2. Step 2: Convert to fraction form
    129,091.94/178,163.58 = 72,503.32/x
  3. Step 3: Cross multiply
    129,091.94x = 178,163.58 × 72,503.32
  4. Step 4: Simplify right side
    129,091.94x = 12,917,451,053.09
  5. Step 5: Solve for x
    x = 12,917,451,053.09/129,091.94
  6. Step 6: Final answer
    x = 100,063.96

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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.