Home / 130,401.85-179,956.38-85,053.80

Finding the Fourth Proportional to 130,401.85, 179,956.38 and 85,053.80

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Solution

The fourth proportional to 130,401.85, 179,956.38 and 85,053.80 is: 117,375.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,401.85 : 179,956.38 = 85,053.80 : x
  2. Step 2: Convert to fraction form
    130,401.85/179,956.38 = 85,053.80/x
  3. Step 3: Cross multiply
    130,401.85x = 179,956.38 × 85,053.80
  4. Step 4: Simplify right side
    130,401.85x = 15,305,973,709.83
  5. Step 5: Solve for x
    x = 15,305,973,709.83/130,401.85
  6. Step 6: Final answer
    x = 117,375.43

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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.