Home / 143,220.39-214,891.35-76,643.25

Finding the Fourth Proportional to 143,220.39, 214,891.35 and 76,643.25

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Solution

The fourth proportional to 143,220.39, 214,891.35 and 76,643.25 is: 114,997.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,220.39 : 214,891.35 = 76,643.25 : x
  2. Step 2: Convert to fraction form
    143,220.39/214,891.35 = 76,643.25/x
  3. Step 3: Cross multiply
    143,220.39x = 214,891.35 × 76,643.25
  4. Step 4: Simplify right side
    143,220.39x = 16,469,971,460.89
  5. Step 5: Solve for x
    x = 16,469,971,460.89/143,220.39
  6. Step 6: Final answer
    x = 114,997.39

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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.