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Finding the Fourth Proportional to 143,322.90, 214,903.35 and 54,579.30

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Solution

The fourth proportional to 143,322.90, 214,903.35 and 54,579.30 is: 81,838.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,322.90 : 214,903.35 = 54,579.30 : x
  2. Step 2: Convert to fraction form
    143,322.90/214,903.35 = 54,579.30/x
  3. Step 3: Cross multiply
    143,322.90x = 214,903.35 × 54,579.30
  4. Step 4: Simplify right side
    143,322.90x = 11,729,274,410.66
  5. Step 5: Solve for x
    x = 11,729,274,410.66/143,322.90
  6. Step 6: Final answer
    x = 81,838.10

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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.