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Finding the Fourth Proportional to 178,418.40, 267,400.80 and 73,118.40

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Solution

The fourth proportional to 178,418.40, 267,400.80 and 73,118.40 is: 109,584.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,418.40 : 267,400.80 = 73,118.40 : x
  2. Step 2: Convert to fraction form
    178,418.40/267,400.80 = 73,118.40/x
  3. Step 3: Cross multiply
    178,418.40x = 267,400.80 × 73,118.40
  4. Step 4: Simplify right side
    178,418.40x = 19,551,918,654.72
  5. Step 5: Solve for x
    x = 19,551,918,654.72/178,418.40
  6. Step 6: Final answer
    x = 109,584.65

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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.