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Finding the Fourth Proportional to 126,188.99, 189,256.73 and 47,309.03

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Solution

The fourth proportional to 126,188.99, 189,256.73 and 47,309.03 is: 70,953.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,188.99 : 189,256.73 = 47,309.03 : x
  2. Step 2: Convert to fraction form
    126,188.99/189,256.73 = 47,309.03/x
  3. Step 3: Cross multiply
    126,188.99x = 189,256.73 × 47,309.03
  4. Step 4: Simplify right side
    126,188.99x = 8,953,551,134.44
  5. Step 5: Solve for x
    x = 8,953,551,134.44/126,188.99
  6. Step 6: Final answer
    x = 70,953.51

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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.