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Finding the Fourth Proportional to 178,791.20, 268,245.08 and 85,284.80

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Solution

The fourth proportional to 178,791.20, 268,245.08 and 85,284.80 is: 127,955.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,791.20 : 268,245.08 = 85,284.80 : x
  2. Step 2: Convert to fraction form
    178,791.20/268,245.08 = 85,284.80/x
  3. Step 3: Cross multiply
    178,791.20x = 268,245.08 × 85,284.80
  4. Step 4: Simplify right side
    178,791.20x = 22,877,227,998.78
  5. Step 5: Solve for x
    x = 22,877,227,998.78/178,791.20
  6. Step 6: Final answer
    x = 127,955.00

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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.