Home / 129,686.48-194,529.72-100,147.40

Finding the Fourth Proportional to 129,686.48, 194,529.72 and 100,147.40

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Solution

The fourth proportional to 129,686.48, 194,529.72 and 100,147.40 is: 150,221.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,686.48 : 194,529.72 = 100,147.40 : x
  2. Step 2: Convert to fraction form
    129,686.48/194,529.72 = 100,147.40/x
  3. Step 3: Cross multiply
    129,686.48x = 194,529.72 × 100,147.40
  4. Step 4: Simplify right side
    129,686.48x = 19,481,645,680.73
  5. Step 5: Solve for x
    x = 19,481,645,680.73/129,686.48
  6. Step 6: Final answer
    x = 150,221.10

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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.