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Finding the Fourth Proportional to 178,690.60, 267,938.70 and 73,520.20

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Solution

The fourth proportional to 178,690.60, 267,938.70 and 73,520.20 is: 110,240.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,690.60 : 267,938.70 = 73,520.20 : x
  2. Step 2: Convert to fraction form
    178,690.60/267,938.70 = 73,520.20/x
  3. Step 3: Cross multiply
    178,690.60x = 267,938.70 × 73,520.20
  4. Step 4: Simplify right side
    178,690.60x = 19,698,906,811.74
  5. Step 5: Solve for x
    x = 19,698,906,811.74/178,690.60
  6. Step 6: Final answer
    x = 110,240.31

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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.