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Finding the Fourth Proportional to 129,759.01, 179,073.57 and 73,169.17

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Solution

The fourth proportional to 129,759.01, 179,073.57 and 73,169.17 is: 100,976.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,759.01 : 179,073.57 = 73,169.17 : x
  2. Step 2: Convert to fraction form
    129,759.01/179,073.57 = 73,169.17/x
  3. Step 3: Cross multiply
    129,759.01x = 179,073.57 × 73,169.17
  4. Step 4: Simplify right side
    129,759.01x = 13,102,664,485.84
  5. Step 5: Solve for x
    x = 13,102,664,485.84/129,759.01
  6. Step 6: Final answer
    x = 100,976.91

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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.