Home / 68,165.10-102,257.34-21,421.62

Finding the Fourth Proportional to 68,165.10, 102,257.34 and 21,421.62

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Solution

The fourth proportional to 68,165.10, 102,257.34 and 21,421.62 is: 32,135.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,165.10 : 102,257.34 = 21,421.62 : x
  2. Step 2: Convert to fraction form
    68,165.10/102,257.34 = 21,421.62/x
  3. Step 3: Cross multiply
    68,165.10x = 102,257.34 × 21,421.62
  4. Step 4: Simplify right side
    68,165.10x = 2,190,517,879.69
  5. Step 5: Solve for x
    x = 2,190,517,879.69/68,165.10
  6. Step 6: Final answer
    x = 32,135.48

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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.