Home / 99,343.26-137,144.49-76,631.27

Finding the Fourth Proportional to 99,343.26, 137,144.49 and 76,631.27

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Solution

The fourth proportional to 99,343.26, 137,144.49 and 76,631.27 is: 105,790.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,343.26 : 137,144.49 = 76,631.27 : x
  2. Step 2: Convert to fraction form
    99,343.26/137,144.49 = 76,631.27/x
  3. Step 3: Cross multiply
    99,343.26x = 137,144.49 × 76,631.27
  4. Step 4: Simplify right side
    99,343.26x = 10,509,555,900.16
  5. Step 5: Solve for x
    x = 10,509,555,900.16/99,343.26
  6. Step 6: Final answer
    x = 105,790.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.