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Finding the Fourth Proportional to 178,445.90, 267,442.05 and 73,145.90

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Solution

The fourth proportional to 178,445.90, 267,442.05 and 73,145.90 is: 109,625.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,445.90 : 267,442.05 = 73,145.90 : x
  2. Step 2: Convert to fraction form
    178,445.90/267,442.05 = 73,145.90/x
  3. Step 3: Cross multiply
    178,445.90x = 267,442.05 × 73,145.90
  4. Step 4: Simplify right side
    178,445.90x = 19,562,289,445.10
  5. Step 5: Solve for x
    x = 19,562,289,445.10/178,445.90
  6. Step 6: Final answer
    x = 109,625.88

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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.