Home / 126,628.40-189,942.60-97,103.90

Finding the Fourth Proportional to 126,628.40, 189,942.60 and 97,103.90

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Solution

The fourth proportional to 126,628.40, 189,942.60 and 97,103.90 is: 145,655.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,628.40 : 189,942.60 = 97,103.90 : x
  2. Step 2: Convert to fraction form
    126,628.40/189,942.60 = 97,103.90/x
  3. Step 3: Cross multiply
    126,628.40x = 189,942.60 × 97,103.90
  4. Step 4: Simplify right side
    126,628.40x = 18,444,167,236.14
  5. Step 5: Solve for x
    x = 18,444,167,236.14/126,628.40
  6. Step 6: Final answer
    x = 145,655.85

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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.