Home / 129,137.76-178,231.25-107,593.34

Finding the Fourth Proportional to 129,137.76, 178,231.25 and 107,593.34

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Solution

The fourth proportional to 129,137.76, 178,231.25 and 107,593.34 is: 148,496.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,137.76 : 178,231.25 = 107,593.34 : x
  2. Step 2: Convert to fraction form
    129,137.76/178,231.25 = 107,593.34/x
  3. Step 3: Cross multiply
    129,137.76x = 178,231.25 × 107,593.34
  4. Step 4: Simplify right side
    129,137.76x = 19,176,494,857.70
  5. Step 5: Solve for x
    x = 19,176,494,857.70/129,137.76
  6. Step 6: Final answer
    x = 148,496.42

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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.