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Finding the Fourth Proportional to 99,908.99, 149,860 and 25,029.78

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Solution

The fourth proportional to 99,908.99, 149,860 and 25,029.78 is: 37,543.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,908.99 : 149,860 = 25,029.78 : x
  2. Step 2: Convert to fraction form
    99,908.99/149,860 = 25,029.78/x
  3. Step 3: Cross multiply
    99,908.99x = 149,860 × 25,029.78
  4. Step 4: Simplify right side
    99,908.99x = 3,750,962,830.80
  5. Step 5: Solve for x
    x = 3,750,962,830.80/99,908.99
  6. Step 6: Final answer
    x = 37,543.80

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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.