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Finding the Fourth Proportional to 143,223.60, 214,835.40 and 73,239.60

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Solution

The fourth proportional to 143,223.60, 214,835.40 and 73,239.60 is: 109,859.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,223.60 : 214,835.40 = 73,239.60 : x
  2. Step 2: Convert to fraction form
    143,223.60/214,835.40 = 73,239.60/x
  3. Step 3: Cross multiply
    143,223.60x = 214,835.40 × 73,239.60
  4. Step 4: Simplify right side
    143,223.60x = 15,734,458,761.84
  5. Step 5: Solve for x
    x = 15,734,458,761.84/143,223.60
  6. Step 6: Final answer
    x = 109,859.40

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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.