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Finding the Fourth Proportional to 178,442.40, 267,436.80 and 73,142.40

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Solution

The fourth proportional to 178,442.40, 267,436.80 and 73,142.40 is: 109,620.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,442.40 : 267,436.80 = 73,142.40 : x
  2. Step 2: Convert to fraction form
    178,442.40/267,436.80 = 73,142.40/x
  3. Step 3: Cross multiply
    178,442.40x = 267,436.80 × 73,142.40
  4. Step 4: Simplify right side
    178,442.40x = 19,560,969,400.32
  5. Step 5: Solve for x
    x = 19,560,969,400.32/178,442.40
  6. Step 6: Final answer
    x = 109,620.64

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1.5x scale

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.