Home / 126,334.28-189,400.82-72,965.54

Finding the Fourth Proportional to 126,334.28, 189,400.82 and 72,965.54

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Solution

The fourth proportional to 126,334.28, 189,400.82 and 72,965.54 is: 109,390.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,334.28 : 189,400.82 = 72,965.54 : x
  2. Step 2: Convert to fraction form
    126,334.28/189,400.82 = 72,965.54/x
  3. Step 3: Cross multiply
    126,334.28x = 189,400.82 × 72,965.54
  4. Step 4: Simplify right side
    126,334.28x = 13,819,731,795.91
  5. Step 5: Solve for x
    x = 13,819,731,795.91/126,334.28
  6. Step 6: Final answer
    x = 109,390.20

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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.