Home / 129,245.22-178,238.07-83,874.69

Finding the Fourth Proportional to 129,245.22, 178,238.07 and 83,874.69

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Solution

The fourth proportional to 129,245.22, 178,238.07 and 83,874.69 is: 115,668.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,245.22 : 178,238.07 = 83,874.69 : x
  2. Step 2: Convert to fraction form
    129,245.22/178,238.07 = 83,874.69/x
  3. Step 3: Cross multiply
    129,245.22x = 178,238.07 × 83,874.69
  4. Step 4: Simplify right side
    129,245.22x = 14,949,662,867.45
  5. Step 5: Solve for x
    x = 14,949,662,867.45/129,245.22
  6. Step 6: Final answer
    x = 115,668.98

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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.