Home / 129,944.92-179,339.55-78,965.98

Finding the Fourth Proportional to 129,944.92, 179,339.55 and 78,965.98

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Solution

The fourth proportional to 129,944.92, 179,339.55 and 78,965.98 is: 108,982.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,944.92 : 179,339.55 = 78,965.98 : x
  2. Step 2: Convert to fraction form
    129,944.92/179,339.55 = 78,965.98/x
  3. Step 3: Cross multiply
    129,944.92x = 179,339.55 × 78,965.98
  4. Step 4: Simplify right side
    129,944.92x = 14,161,723,318.51
  5. Step 5: Solve for x
    x = 14,161,723,318.51/129,944.92
  6. Step 6: Final answer
    x = 108,982.51

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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.