Home / 118,621.80-177,974.82-74,196.54

Finding the Fourth Proportional to 118,621.80, 177,974.82 and 74,196.54

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Solution

The fourth proportional to 118,621.80, 177,974.82 and 74,196.54 is: 111,321.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,621.80 : 177,974.82 = 74,196.54 : x
  2. Step 2: Convert to fraction form
    118,621.80/177,974.82 = 74,196.54/x
  3. Step 3: Cross multiply
    118,621.80x = 177,974.82 × 74,196.54
  4. Step 4: Simplify right side
    118,621.80x = 13,205,115,851.12
  5. Step 5: Solve for x
    x = 13,205,115,851.12/118,621.80
  6. Step 6: Final answer
    x = 111,321.16

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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.