Home / 129,747.12-179,053.74-73,147.56

Finding the Fourth Proportional to 129,747.12, 179,053.74 and 73,147.56

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Solution

The fourth proportional to 129,747.12, 179,053.74 and 73,147.56 is: 100,945.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,747.12 : 179,053.74 = 73,147.56 : x
  2. Step 2: Convert to fraction form
    129,747.12/179,053.74 = 73,147.56/x
  3. Step 3: Cross multiply
    129,747.12x = 179,053.74 × 73,147.56
  4. Step 4: Simplify right side
    129,747.12x = 13,097,344,189.87
  5. Step 5: Solve for x
    x = 13,097,344,189.87/129,747.12
  6. Step 6: Final answer
    x = 100,945.16

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1.5x scale

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.