Home / 115,166.22-172,750.41-112,716.78

Finding the Fourth Proportional to 115,166.22, 172,750.41 and 112,716.78

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Solution

The fourth proportional to 115,166.22, 172,750.41 and 112,716.78 is: 169,076.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,166.22 : 172,750.41 = 112,716.78 : x
  2. Step 2: Convert to fraction form
    115,166.22/172,750.41 = 112,716.78/x
  3. Step 3: Cross multiply
    115,166.22x = 172,750.41 × 112,716.78
  4. Step 4: Simplify right side
    115,166.22x = 19,471,869,958.88
  5. Step 5: Solve for x
    x = 19,471,869,958.88/115,166.22
  6. Step 6: Final answer
    x = 169,076.23

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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.