Home / 129,961.80-179,362.82-78,982.83

Finding the Fourth Proportional to 129,961.80, 179,362.82 and 78,982.83

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Solution

The fourth proportional to 129,961.80, 179,362.82 and 78,982.83 is: 109,005.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,961.80 : 179,362.82 = 78,982.83 : x
  2. Step 2: Convert to fraction form
    129,961.80/179,362.82 = 78,982.83/x
  3. Step 3: Cross multiply
    129,961.80x = 179,362.82 × 78,982.83
  4. Step 4: Simplify right side
    129,961.80x = 14,166,583,317.84
  5. Step 5: Solve for x
    x = 14,166,583,317.84/129,961.80
  6. Step 6: Final answer
    x = 109,005.75

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1.5x scale

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.