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Finding the Fourth Proportional to 151,978.20, 228,096.90 and 67,867.80

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Solution

The fourth proportional to 151,978.20, 228,096.90 and 67,867.80 is: 101,859.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,978.20 : 228,096.90 = 67,867.80 : x
  2. Step 2: Convert to fraction form
    151,978.20/228,096.90 = 67,867.80/x
  3. Step 3: Cross multiply
    151,978.20x = 228,096.90 × 67,867.80
  4. Step 4: Simplify right side
    151,978.20x = 15,480,434,789.82
  5. Step 5: Solve for x
    x = 15,480,434,789.82/151,978.20
  6. Step 6: Final answer
    x = 101,859.57

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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.