Home / 129,712.78-179,003.69-73,124.16

Finding the Fourth Proportional to 129,712.78, 179,003.69 and 73,124.16

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Solution

The fourth proportional to 129,712.78, 179,003.69 and 73,124.16 is: 100,911.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,712.78 : 179,003.69 = 73,124.16 : x
  2. Step 2: Convert to fraction form
    129,712.78/179,003.69 = 73,124.16/x
  3. Step 3: Cross multiply
    129,712.78x = 179,003.69 × 73,124.16
  4. Step 4: Simplify right side
    129,712.78x = 13,089,494,468.15
  5. Step 5: Solve for x
    x = 13,089,494,468.15/129,712.78
  6. Step 6: Final answer
    x = 100,911.37

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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.