Home / 129,906.35-179,267.26-72,544.08

Finding the Fourth Proportional to 129,906.35, 179,267.26 and 72,544.08

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Solution

The fourth proportional to 129,906.35, 179,267.26 and 72,544.08 is: 100,108.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,906.35 : 179,267.26 = 72,544.08 : x
  2. Step 2: Convert to fraction form
    129,906.35/179,267.26 = 72,544.08/x
  3. Step 3: Cross multiply
    129,906.35x = 179,267.26 × 72,544.08
  4. Step 4: Simplify right side
    129,906.35x = 13,004,778,450.82
  5. Step 5: Solve for x
    x = 13,004,778,450.82/129,906.35
  6. Step 6: Final answer
    x = 100,108.87

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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.