Home / 216,631.89-325,107.46-102,780.12

Finding the Fourth Proportional to 216,631.89, 325,107.46 and 102,780.12

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Solution

The fourth proportional to 216,631.89, 325,107.46 and 102,780.12 is: 154,245.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,631.89 : 325,107.46 = 102,780.12 : x
  2. Step 2: Convert to fraction form
    216,631.89/325,107.46 = 102,780.12/x
  3. Step 3: Cross multiply
    216,631.89x = 325,107.46 × 102,780.12
  4. Step 4: Simplify right side
    216,631.89x = 33,414,581,869.21
  5. Step 5: Solve for x
    x = 33,414,581,869.21/216,631.89
  6. Step 6: Final answer
    x = 154,245.91

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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.