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Finding the Fourth Proportional to 129,759.51, 179,074.26 and 73,169.67

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Solution

The fourth proportional to 129,759.51, 179,074.26 and 73,169.67 is: 100,977.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,759.51 : 179,074.26 = 73,169.67 : x
  2. Step 2: Convert to fraction form
    129,759.51/179,074.26 = 73,169.67/x
  3. Step 3: Cross multiply
    129,759.51x = 179,074.26 × 73,169.67
  4. Step 4: Simplify right side
    129,759.51x = 13,102,804,509.69
  5. Step 5: Solve for x
    x = 13,102,804,509.69/129,759.51
  6. Step 6: Final answer
    x = 100,977.60

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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.