Home / 100,821.78-151,214.31-29,729.70

Finding the Fourth Proportional to 100,821.78, 151,214.31 and 29,729.70

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Solution

The fourth proportional to 100,821.78, 151,214.31 and 29,729.70 is: 44,589.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,821.78 : 151,214.31 = 29,729.70 : x
  2. Step 2: Convert to fraction form
    100,821.78/151,214.31 = 29,729.70/x
  3. Step 3: Cross multiply
    100,821.78x = 151,214.31 × 29,729.70
  4. Step 4: Simplify right side
    100,821.78x = 4,495,556,072.01
  5. Step 5: Solve for x
    x = 4,495,556,072.01/100,821.78
  6. Step 6: Final answer
    x = 44,589.14

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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.