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Finding the Fourth Proportional to 171,066.60, 256,745.70 and 76,442.40

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Solution

The fourth proportional to 171,066.60, 256,745.70 and 76,442.40 is: 114,728.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,066.60 : 256,745.70 = 76,442.40 : x
  2. Step 2: Convert to fraction form
    171,066.60/256,745.70 = 76,442.40/x
  3. Step 3: Cross multiply
    171,066.60x = 256,745.70 × 76,442.40
  4. Step 4: Simplify right side
    171,066.60x = 19,626,257,497.68
  5. Step 5: Solve for x
    x = 19,626,257,497.68/171,066.60
  6. Step 6: Final answer
    x = 114,728.75

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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.