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Finding the Fourth Proportional to 178,817, 267,817.26 and 85,388.36

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Solution

The fourth proportional to 178,817, 267,817.26 and 85,388.36 is: 127,887.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,817 : 267,817.26 = 85,388.36 : x
  2. Step 2: Convert to fraction form
    178,817/267,817.26 = 85,388.36/x
  3. Step 3: Cross multiply
    178,817x = 267,817.26 × 85,388.36
  4. Step 4: Simplify right side
    178,817x = 22,868,476,611.09
  5. Step 5: Solve for x
    x = 22,868,476,611.09/178,817
  6. Step 6: Final answer
    x = 127,887.60

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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.