Home / 230,890.70-318,635.88-128,914.54

Finding the Fourth Proportional to 230,890.70, 318,635.88 and 128,914.54

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Solution

The fourth proportional to 230,890.70, 318,635.88 and 128,914.54 is: 177,905.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,890.70 : 318,635.88 = 128,914.54 : x
  2. Step 2: Convert to fraction form
    230,890.70/318,635.88 = 128,914.54/x
  3. Step 3: Cross multiply
    230,890.70x = 318,635.88 × 128,914.54
  4. Step 4: Simplify right side
    230,890.70x = 41,076,796,617.68
  5. Step 5: Solve for x
    x = 41,076,796,617.68/230,890.70
  6. Step 6: Final answer
    x = 177,905.81

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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.