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Finding the Fourth Proportional to 143,051.85, 214,579.40 and 43,212.87

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Solution

The fourth proportional to 143,051.85, 214,579.40 and 43,212.87 is: 64,819.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,051.85 : 214,579.40 = 43,212.87 : x
  2. Step 2: Convert to fraction form
    143,051.85/214,579.40 = 43,212.87/x
  3. Step 3: Cross multiply
    143,051.85x = 214,579.40 × 43,212.87
  4. Step 4: Simplify right side
    143,051.85x = 9,272,592,548.56
  5. Step 5: Solve for x
    x = 9,272,592,548.56/143,051.85
  6. Step 6: Final answer
    x = 64,819.80

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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.