Home / 181,391.22-272,178.99-81,531.30

Finding the Fourth Proportional to 181,391.22, 272,178.99 and 81,531.30

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Solution

The fourth proportional to 181,391.22, 272,178.99 and 81,531.30 is: 122,338.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,391.22 : 272,178.99 = 81,531.30 : x
  2. Step 2: Convert to fraction form
    181,391.22/272,178.99 = 81,531.30/x
  3. Step 3: Cross multiply
    181,391.22x = 272,178.99 × 81,531.30
  4. Step 4: Simplify right side
    181,391.22x = 22,191,106,887.39
  5. Step 5: Solve for x
    x = 22,191,106,887.39/181,391.22
  6. Step 6: Final answer
    x = 122,338.37

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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.