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Finding the Fourth Proportional to 143,493.40, 214,980.90 and 122,757.40

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Solution

The fourth proportional to 143,493.40, 214,980.90 and 122,757.40 is: 183,914.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,493.40 : 214,980.90 = 122,757.40 : x
  2. Step 2: Convert to fraction form
    143,493.40/214,980.90 = 122,757.40/x
  3. Step 3: Cross multiply
    143,493.40x = 214,980.90 × 122,757.40
  4. Step 4: Simplify right side
    143,493.40x = 26,390,496,333.66
  5. Step 5: Solve for x
    x = 26,390,496,333.66/143,493.40
  6. Step 6: Final answer
    x = 183,914.36

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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.