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Finding the Fourth Proportional to 143,276.44, 214,858.50 and 84,127

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Solution

The fourth proportional to 143,276.44, 214,858.50 and 84,127 is: 126,157.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,276.44 : 214,858.50 = 84,127 : x
  2. Step 2: Convert to fraction form
    143,276.44/214,858.50 = 84,127/x
  3. Step 3: Cross multiply
    143,276.44x = 214,858.50 × 84,127
  4. Step 4: Simplify right side
    143,276.44x = 18,075,401,029.50
  5. Step 5: Solve for x
    x = 18,075,401,029.50/143,276.44
  6. Step 6: Final answer
    x = 126,157.52

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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.