Home / 129,769.48-179,078.34-73,186.12

Finding the Fourth Proportional to 129,769.48, 179,078.34 and 73,186.12

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Solution

The fourth proportional to 129,769.48, 179,078.34 and 73,186.12 is: 100,994.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,769.48 : 179,078.34 = 73,186.12 : x
  2. Step 2: Convert to fraction form
    129,769.48/179,078.34 = 73,186.12/x
  3. Step 3: Cross multiply
    129,769.48x = 179,078.34 × 73,186.12
  4. Step 4: Simplify right side
    129,769.48x = 13,106,048,880.64
  5. Step 5: Solve for x
    x = 13,106,048,880.64/129,769.48
  6. Step 6: Final answer
    x = 100,994.85

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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.