Home / 99,756.09-149,634.30-79,891.92

Finding the Fourth Proportional to 99,756.09, 149,634.30 and 79,891.92

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Solution

The fourth proportional to 99,756.09, 149,634.30 and 79,891.92 is: 119,838.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,756.09 : 149,634.30 = 79,891.92 : x
  2. Step 2: Convert to fraction form
    99,756.09/149,634.30 = 79,891.92/x
  3. Step 3: Cross multiply
    99,756.09x = 149,634.30 × 79,891.92
  4. Step 4: Simplify right side
    99,756.09x = 11,954,571,824.45
  5. Step 5: Solve for x
    x = 11,954,571,824.45/99,756.09
  6. Step 6: Final answer
    x = 119,838.02

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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.