Home / 126,163.40-189,241-51,261.40

Finding the Fourth Proportional to 126,163.40, 189,241 and 51,261.40

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Solution

The fourth proportional to 126,163.40, 189,241 and 51,261.40 is: 76,890.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,163.40 : 189,241 = 51,261.40 : x
  2. Step 2: Convert to fraction form
    126,163.40/189,241 = 51,261.40/x
  3. Step 3: Cross multiply
    126,163.40x = 189,241 × 51,261.40
  4. Step 4: Simplify right side
    126,163.40x = 9,700,758,597.40
  5. Step 5: Solve for x
    x = 9,700,758,597.40/126,163.40
  6. Step 6: Final answer
    x = 76,890.43

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1.5x scale

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.