Home / 129,713.36-179,002.05-73,124.78

Finding the Fourth Proportional to 129,713.36, 179,002.05 and 73,124.78

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Solution

The fourth proportional to 129,713.36, 179,002.05 and 73,124.78 is: 100,910.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,713.36 : 179,002.05 = 73,124.78 : x
  2. Step 2: Convert to fraction form
    129,713.36/179,002.05 = 73,124.78/x
  3. Step 3: Cross multiply
    129,713.36x = 179,002.05 × 73,124.78
  4. Step 4: Simplify right side
    129,713.36x = 13,089,485,525.80
  5. Step 5: Solve for x
    x = 13,089,485,525.80/129,713.36
  6. Step 6: Final answer
    x = 100,910.85

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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.