Home / 129,353.22-178,480.56-75,627.84

Finding the Fourth Proportional to 129,353.22, 178,480.56 and 75,627.84

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Solution

The fourth proportional to 129,353.22, 178,480.56 and 75,627.84 is: 104,350.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,353.22 : 178,480.56 = 75,627.84 : x
  2. Step 2: Convert to fraction form
    129,353.22/178,480.56 = 75,627.84/x
  3. Step 3: Cross multiply
    129,353.22x = 178,480.56 × 75,627.84
  4. Step 4: Simplify right side
    129,353.22x = 13,498,099,234.79
  5. Step 5: Solve for x
    x = 13,498,099,234.79/129,353.22
  6. Step 6: Final answer
    x = 104,350.70

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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.