Home / 129,760.48-179,069.16-73,171.45

Finding the Fourth Proportional to 129,760.48, 179,069.16 and 73,171.45

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Solution

The fourth proportional to 129,760.48, 179,069.16 and 73,171.45 is: 100,976.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,760.48 : 179,069.16 = 73,171.45 : x
  2. Step 2: Convert to fraction form
    129,760.48/179,069.16 = 73,171.45/x
  3. Step 3: Cross multiply
    129,760.48x = 179,069.16 × 73,171.45
  4. Step 4: Simplify right side
    129,760.48x = 13,102,750,087.48
  5. Step 5: Solve for x
    x = 13,102,750,087.48/129,760.48
  6. Step 6: Final answer
    x = 100,976.43

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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.