Home / 129,765.11-179,086.77-73,187.42

Finding the Fourth Proportional to 129,765.11, 179,086.77 and 73,187.42

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Solution

The fourth proportional to 129,765.11, 179,086.77 and 73,187.42 is: 101,004.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,765.11 : 179,086.77 = 73,187.42 : x
  2. Step 2: Convert to fraction form
    129,765.11/179,086.77 = 73,187.42/x
  3. Step 3: Cross multiply
    129,765.11x = 179,086.77 × 73,187.42
  4. Step 4: Simplify right side
    129,765.11x = 13,106,897,757.00
  5. Step 5: Solve for x
    x = 13,106,897,757.00/129,765.11
  6. Step 6: Final answer
    x = 101,004.79

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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.