Home / 129,682.47-194,523.71-100,143.39

Finding the Fourth Proportional to 129,682.47, 194,523.71 and 100,143.39

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Solution

The fourth proportional to 129,682.47, 194,523.71 and 100,143.39 is: 150,215.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,682.47 : 194,523.71 = 100,143.39 : x
  2. Step 2: Convert to fraction form
    129,682.47/194,523.71 = 100,143.39/x
  3. Step 3: Cross multiply
    129,682.47x = 194,523.71 × 100,143.39
  4. Step 4: Simplify right side
    129,682.47x = 19,480,263,754.78
  5. Step 5: Solve for x
    x = 19,480,263,754.78/129,682.47
  6. Step 6: Final answer
    x = 150,215.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.