Home / 118,945.65-178,418.79-40,115.25

Finding the Fourth Proportional to 118,945.65, 178,418.79 and 40,115.25

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Solution

The fourth proportional to 118,945.65, 178,418.79 and 40,115.25 is: 60,172.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,945.65 : 178,418.79 = 40,115.25 : x
  2. Step 2: Convert to fraction form
    118,945.65/178,418.79 = 40,115.25/x
  3. Step 3: Cross multiply
    118,945.65x = 178,418.79 × 40,115.25
  4. Step 4: Simplify right side
    118,945.65x = 7,157,314,711.31
  5. Step 5: Solve for x
    x = 7,157,314,711.31/118,945.65
  6. Step 6: Final answer
    x = 60,172.98

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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.