Home / 129,770.10-179,052.08-73,170.54

Finding the Fourth Proportional to 129,770.10, 179,052.08 and 73,170.54

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Solution

The fourth proportional to 129,770.10, 179,052.08 and 73,170.54 is: 100,958.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,770.10 : 179,052.08 = 73,170.54 : x
  2. Step 2: Convert to fraction form
    129,770.10/179,052.08 = 73,170.54/x
  3. Step 3: Cross multiply
    129,770.10x = 179,052.08 × 73,170.54
  4. Step 4: Simplify right side
    129,770.10x = 13,101,337,015.87
  5. Step 5: Solve for x
    x = 13,101,337,015.87/129,770.10
  6. Step 6: Final answer
    x = 100,958.06

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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.