Home / 118,913.31-178,388.42-40,021.38

Finding the Fourth Proportional to 118,913.31, 178,388.42 and 40,021.38

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Solution

The fourth proportional to 118,913.31, 178,388.42 and 40,021.38 is: 60,038.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,913.31 : 178,388.42 = 40,021.38 : x
  2. Step 2: Convert to fraction form
    118,913.31/178,388.42 = 40,021.38/x
  3. Step 3: Cross multiply
    118,913.31x = 178,388.42 × 40,021.38
  4. Step 4: Simplify right side
    118,913.31x = 7,139,350,544.31
  5. Step 5: Solve for x
    x = 7,139,350,544.31/118,913.31
  6. Step 6: Final answer
    x = 60,038.28

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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.