Home / 129,738.24-179,031.78-73,145.94

Finding the Fourth Proportional to 129,738.24, 179,031.78 and 73,145.94

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Solution

The fourth proportional to 129,738.24, 179,031.78 and 73,145.94 is: 100,937.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,738.24 : 179,031.78 = 73,145.94 : x
  2. Step 2: Convert to fraction form
    129,738.24/179,031.78 = 73,145.94/x
  3. Step 3: Cross multiply
    129,738.24x = 179,031.78 × 73,145.94
  4. Step 4: Simplify right side
    129,738.24x = 13,095,447,837.97
  5. Step 5: Solve for x
    x = 13,095,447,837.97/129,738.24
  6. Step 6: Final answer
    x = 100,937.46

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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.