Home / 100,113.73-138,172.46-57,093.31

Finding the Fourth Proportional to 100,113.73, 138,172.46 and 57,093.31

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Solution

The fourth proportional to 100,113.73, 138,172.46 and 57,093.31 is: 78,797.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,113.73 : 138,172.46 = 57,093.31 : x
  2. Step 2: Convert to fraction form
    100,113.73/138,172.46 = 57,093.31/x
  3. Step 3: Cross multiply
    100,113.73x = 138,172.46 × 57,093.31
  4. Step 4: Simplify right side
    100,113.73x = 7,888,723,092.24
  5. Step 5: Solve for x
    x = 7,888,723,092.24/100,113.73
  6. Step 6: Final answer
    x = 78,797.61

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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.