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Finding the Fourth Proportional to 126,889.76, 190,420.77 and 67,767.86

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Solution

The fourth proportional to 126,889.76, 190,420.77 and 67,767.86 is: 101,697.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,889.76 : 190,420.77 = 67,767.86 : x
  2. Step 2: Convert to fraction form
    126,889.76/190,420.77 = 67,767.86/x
  3. Step 3: Cross multiply
    126,889.76x = 190,420.77 × 67,767.86
  4. Step 4: Simplify right side
    126,889.76x = 12,904,408,082.45
  5. Step 5: Solve for x
    x = 12,904,408,082.45/126,889.76
  6. Step 6: Final answer
    x = 101,697.79

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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.