Home / 299,747.10-449,620.65-78,131.10

Finding the Fourth Proportional to 299,747.10, 449,620.65 and 78,131.10

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Solution

The fourth proportional to 299,747.10, 449,620.65 and 78,131.10 is: 117,196.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,747.10 : 449,620.65 = 78,131.10 : x
  2. Step 2: Convert to fraction form
    299,747.10/449,620.65 = 78,131.10/x
  3. Step 3: Cross multiply
    299,747.10x = 449,620.65 × 78,131.10
  4. Step 4: Simplify right side
    299,747.10x = 35,129,355,967.22
  5. Step 5: Solve for x
    x = 35,129,355,967.22/299,747.10
  6. Step 6: Final answer
    x = 117,196.65

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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.