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Finding the Fourth Proportional to 203,817.97, 305,748.27 and 68,897.89

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Solution

The fourth proportional to 203,817.97, 305,748.27 and 68,897.89 is: 103,354.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,817.97 : 305,748.27 = 68,897.89 : x
  2. Step 2: Convert to fraction form
    203,817.97/305,748.27 = 68,897.89/x
  3. Step 3: Cross multiply
    203,817.97x = 305,748.27 × 68,897.89
  4. Step 4: Simplify right side
    203,817.97x = 21,065,411,056.34
  5. Step 5: Solve for x
    x = 21,065,411,056.34/203,817.97
  6. Step 6: Final answer
    x = 103,354.04

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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.