Home / 118,721.64-178,087.93-66,091.49

Finding the Fourth Proportional to 118,721.64, 178,087.93 and 66,091.49

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Solution

The fourth proportional to 118,721.64, 178,087.93 and 66,091.49 is: 99,140.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,721.64 : 178,087.93 = 66,091.49 : x
  2. Step 2: Convert to fraction form
    118,721.64/178,087.93 = 66,091.49/x
  3. Step 3: Cross multiply
    118,721.64x = 178,087.93 × 66,091.49
  4. Step 4: Simplify right side
    118,721.64x = 11,770,095,589.05
  5. Step 5: Solve for x
    x = 11,770,095,589.05/118,721.64
  6. Step 6: Final answer
    x = 99,140.27

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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.