Home / 100,273.42-138,371.31-54,942.38

Finding the Fourth Proportional to 100,273.42, 138,371.31 and 54,942.38

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Solution

The fourth proportional to 100,273.42, 138,371.31 and 54,942.38 is: 75,817.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,273.42 : 138,371.31 = 54,942.38 : x
  2. Step 2: Convert to fraction form
    100,273.42/138,371.31 = 54,942.38/x
  3. Step 3: Cross multiply
    100,273.42x = 138,371.31 × 54,942.38
  4. Step 4: Simplify right side
    100,273.42x = 7,602,448,403.26
  5. Step 5: Solve for x
    x = 7,602,448,403.26/100,273.42
  6. Step 6: Final answer
    x = 75,817.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.