Home / 129,928.80-179,385.12-106,112.64

Finding the Fourth Proportional to 129,928.80, 179,385.12 and 106,112.64

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Solution

The fourth proportional to 129,928.80, 179,385.12 and 106,112.64 is: 146,503.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,928.80 : 179,385.12 = 106,112.64 : x
  2. Step 2: Convert to fraction form
    129,928.80/179,385.12 = 106,112.64/x
  3. Step 3: Cross multiply
    129,928.80x = 179,385.12 × 106,112.64
  4. Step 4: Simplify right side
    129,928.80x = 19,035,028,659.92
  5. Step 5: Solve for x
    x = 19,035,028,659.92/129,928.80
  6. Step 6: Final answer
    x = 146,503.54

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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.