Home / 115,021.58-172,549.79-36,128.39

Finding the Fourth Proportional to 115,021.58, 172,549.79 and 36,128.39

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Solution

The fourth proportional to 115,021.58, 172,549.79 and 36,128.39 is: 54,198.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,021.58 : 172,549.79 = 36,128.39 : x
  2. Step 2: Convert to fraction form
    115,021.58/172,549.79 = 36,128.39/x
  3. Step 3: Cross multiply
    115,021.58x = 172,549.79 × 36,128.39
  4. Step 4: Simplify right side
    115,021.58x = 6,233,945,926.90
  5. Step 5: Solve for x
    x = 6,233,945,926.90/115,021.58
  6. Step 6: Final answer
    x = 54,198.06

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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.