Home / 143,211.39-214,877.84-76,634.25

Finding the Fourth Proportional to 143,211.39, 214,877.84 and 76,634.25

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Solution

The fourth proportional to 143,211.39, 214,877.84 and 76,634.25 is: 114,983.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,211.39 : 214,877.84 = 76,634.25 : x
  2. Step 2: Convert to fraction form
    143,211.39/214,877.84 = 76,634.25/x
  3. Step 3: Cross multiply
    143,211.39x = 214,877.84 × 76,634.25
  4. Step 4: Simplify right side
    143,211.39x = 16,467,001,726.85
  5. Step 5: Solve for x
    x = 16,467,001,726.85/143,211.39
  6. Step 6: Final answer
    x = 114,983.88

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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.