Home / 143,212.39-214,879.34-76,635.25

Finding the Fourth Proportional to 143,212.39, 214,879.34 and 76,635.25

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Solution

The fourth proportional to 143,212.39, 214,879.34 and 76,635.25 is: 114,985.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,212.39 : 214,879.34 = 76,635.25 : x
  2. Step 2: Convert to fraction form
    143,212.39/214,879.34 = 76,635.25/x
  3. Step 3: Cross multiply
    143,212.39x = 214,879.34 × 76,635.25
  4. Step 4: Simplify right side
    143,212.39x = 16,467,331,940.74
  5. Step 5: Solve for x
    x = 16,467,331,940.74/143,212.39
  6. Step 6: Final answer
    x = 114,985.39

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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.