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Finding the Fourth Proportional to 143,250.78, 214,876.17 and 54,483.78

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Solution

The fourth proportional to 143,250.78, 214,876.17 and 54,483.78 is: 81,725.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,250.78 : 214,876.17 = 54,483.78 : x
  2. Step 2: Convert to fraction form
    143,250.78/214,876.17 = 54,483.78/x
  3. Step 3: Cross multiply
    143,250.78x = 214,876.17 × 54,483.78
  4. Step 4: Simplify right side
    143,250.78x = 11,707,265,973.52
  5. Step 5: Solve for x
    x = 11,707,265,973.52/143,250.78
  6. Step 6: Final answer
    x = 81,725.67

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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.