Home / 129,986.56-179,378.40-73,396.48

Finding the Fourth Proportional to 129,986.56, 179,378.40 and 73,396.48

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Solution

The fourth proportional to 129,986.56, 179,378.40 and 73,396.48 is: 101,285.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,986.56 : 179,378.40 = 73,396.48 : x
  2. Step 2: Convert to fraction form
    129,986.56/179,378.40 = 73,396.48/x
  3. Step 3: Cross multiply
    129,986.56x = 179,378.40 × 73,396.48
  4. Step 4: Simplify right side
    129,986.56x = 13,165,743,148.03
  5. Step 5: Solve for x
    x = 13,165,743,148.03/129,986.56
  6. Step 6: Final answer
    x = 101,285.42

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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.