Home / 126,543.82-189,777.39-66,539.98

Finding the Fourth Proportional to 126,543.82, 189,777.39 and 66,539.98

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Solution

The fourth proportional to 126,543.82, 189,777.39 and 66,539.98 is: 99,789.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,543.82 : 189,777.39 = 66,539.98 : x
  2. Step 2: Convert to fraction form
    126,543.82/189,777.39 = 66,539.98/x
  3. Step 3: Cross multiply
    126,543.82x = 189,777.39 × 66,539.98
  4. Step 4: Simplify right side
    126,543.82x = 12,627,783,735.05
  5. Step 5: Solve for x
    x = 12,627,783,735.05/126,543.82
  6. Step 6: Final answer
    x = 99,789.81

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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.