Home / 129,608.76-178,846.38-73,019.64

Finding the Fourth Proportional to 129,608.76, 178,846.38 and 73,019.64

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Solution

The fourth proportional to 129,608.76, 178,846.38 and 73,019.64 is: 100,759.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,608.76 : 178,846.38 = 73,019.64 : x
  2. Step 2: Convert to fraction form
    129,608.76/178,846.38 = 73,019.64/x
  3. Step 3: Cross multiply
    129,608.76x = 178,846.38 × 73,019.64
  4. Step 4: Simplify right side
    129,608.76x = 13,059,298,282.90
  5. Step 5: Solve for x
    x = 13,059,298,282.90/129,608.76
  6. Step 6: Final answer
    x = 100,759.38

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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.