Home / 118,979.67-178,231.56-71,568.60

Finding the Fourth Proportional to 118,979.67, 178,231.56 and 71,568.60

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Solution

The fourth proportional to 118,979.67, 178,231.56 and 71,568.60 is: 107,209.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,979.67 : 178,231.56 = 71,568.60 : x
  2. Step 2: Convert to fraction form
    118,979.67/178,231.56 = 71,568.60/x
  3. Step 3: Cross multiply
    118,979.67x = 178,231.56 × 71,568.60
  4. Step 4: Simplify right side
    118,979.67x = 12,755,783,225.02
  5. Step 5: Solve for x
    x = 12,755,783,225.02/118,979.67
  6. Step 6: Final answer
    x = 107,209.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.