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Finding the Fourth Proportional to 173,390.60, 259,697.10 and 142,286.60

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Solution

The fourth proportional to 173,390.60, 259,697.10 and 142,286.60 is: 213,110.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,390.60 : 259,697.10 = 142,286.60 : x
  2. Step 2: Convert to fraction form
    173,390.60/259,697.10 = 142,286.60/x
  3. Step 3: Cross multiply
    173,390.60x = 259,697.10 × 142,286.60
  4. Step 4: Simplify right side
    173,390.60x = 36,951,417,388.86
  5. Step 5: Solve for x
    x = 36,951,417,388.86/173,390.60
  6. Step 6: Final answer
    x = 213,110.85

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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.