Home / 129,933.21-179,296.16-72,564.56

Finding the Fourth Proportional to 129,933.21, 179,296.16 and 72,564.56

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Solution

The fourth proportional to 129,933.21, 179,296.16 and 72,564.56 is: 100,132.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,933.21 : 179,296.16 = 72,564.56 : x
  2. Step 2: Convert to fraction form
    129,933.21/179,296.16 = 72,564.56/x
  3. Step 3: Cross multiply
    129,933.21x = 179,296.16 × 72,564.56
  4. Step 4: Simplify right side
    129,933.21x = 13,010,546,960.09
  5. Step 5: Solve for x
    x = 13,010,546,960.09/129,933.21
  6. Step 6: Final answer
    x = 100,132.58

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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.