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Finding the Fourth Proportional to 203,129.40, 304,722.48 and 84,773.64

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Solution

The fourth proportional to 203,129.40, 304,722.48 and 84,773.64 is: 127,172.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,129.40 : 304,722.48 = 84,773.64 : x
  2. Step 2: Convert to fraction form
    203,129.40/304,722.48 = 84,773.64/x
  3. Step 3: Cross multiply
    203,129.40x = 304,722.48 × 84,773.64
  4. Step 4: Simplify right side
    203,129.40x = 25,832,433,819.43
  5. Step 5: Solve for x
    x = 25,832,433,819.43/203,129.40
  6. Step 6: Final answer
    x = 127,172.30

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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.