Home / 100,872.30-151,330.05-30,758.70

Finding the Fourth Proportional to 100,872.30, 151,330.05 and 30,758.70

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Solution

The fourth proportional to 100,872.30, 151,330.05 and 30,758.70 is: 46,144.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,872.30 : 151,330.05 = 30,758.70 : x
  2. Step 2: Convert to fraction form
    100,872.30/151,330.05 = 30,758.70/x
  3. Step 3: Cross multiply
    100,872.30x = 151,330.05 × 30,758.70
  4. Step 4: Simplify right side
    100,872.30x = 4,654,715,608.94
  5. Step 5: Solve for x
    x = 4,654,715,608.94/100,872.30
  6. Step 6: Final answer
    x = 46,144.64

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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.