Home / 126,605.06-189,739.92-67,313.06

Finding the Fourth Proportional to 126,605.06, 189,739.92 and 67,313.06

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Solution

The fourth proportional to 126,605.06, 189,739.92 and 67,313.06 is: 100,880.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,605.06 : 189,739.92 = 67,313.06 : x
  2. Step 2: Convert to fraction form
    126,605.06/189,739.92 = 67,313.06/x
  3. Step 3: Cross multiply
    126,605.06x = 189,739.92 × 67,313.06
  4. Step 4: Simplify right side
    126,605.06x = 12,771,974,619.36
  5. Step 5: Solve for x
    x = 12,771,974,619.36/126,605.06
  6. Step 6: Final answer
    x = 100,880.44

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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.