Home / 99,738.88-149,609.76-28,661.44

Finding the Fourth Proportional to 99,738.88, 149,609.76 and 28,661.44

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Solution

The fourth proportional to 99,738.88, 149,609.76 and 28,661.44 is: 42,992.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,738.88 : 149,609.76 = 28,661.44 : x
  2. Step 2: Convert to fraction form
    99,738.88/149,609.76 = 28,661.44/x
  3. Step 3: Cross multiply
    99,738.88x = 149,609.76 × 28,661.44
  4. Step 4: Simplify right side
    99,738.88x = 4,288,031,159.65
  5. Step 5: Solve for x
    x = 4,288,031,159.65/99,738.88
  6. Step 6: Final answer
    x = 42,992.57

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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.